Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

61 files changed, 1829 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/parseFloat/15.1.2.3-2-1.js b/js/src/tests/test262/built-ins/parseFloat/15.1.2.3-2-1.js
new file mode 100644
index 0000000000..06fa71941f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/15.1.2.3-2-1.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parsefloat-string
+description: >
+    pareseFloat - 'trimmedString' is the empty string when inputString
+    does not contain any such characters
+---*/
+
+assert.sameValue(parseFloat(""), NaN, 'parseFloat("")');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T1.js
new file mode 100644
index 0000000000..0d12df1ebd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T1.js
@@ -0,0 +1,13 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for boolean primitive
+---*/
+
+assert.sameValue(parseFloat(true), NaN, "true");
+assert.sameValue(parseFloat(false), NaN, "false");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T2.js
new file mode 100644
index 0000000000..731963f0c5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for number primitive
+---*/
+
+//CHECK#1
+if (parseFloat(-1.1) !== parseFloat("-1.1")) {
+  throw new Test262Error('#1: parseFloat(-1.1) === parseFloat("-1.1"). Actual: ' + (parseFloat(-1.1)));
+}
+
+//CHECK#2
+if (parseFloat(Infinity) !== parseFloat("Infinity")) {
+  throw new Test262Error('#2: parseFloat(Infinity) === parseFloat("Infinity"). Actual: ' + (parseFloat(Infinity)));
+}
+
+//CHECK#3
+if (String(parseFloat(NaN)) !== "NaN") {
+  throw new Test262Error('#3: String(parseFloat(NaN)) === "NaN". Actual: ' + (String(parseFloat(NaN))));
+}
+
+//CHECK#4
+if (parseFloat(.01e+2) !== parseFloat(".01e+2")) {
+  throw new Test262Error('#4: parseFloat(.01e+2) === parseFloat(".01e+2"). Actual: ' + (parseFloat(.01e+2)));
+}
+
+//CHECK#5
+if (parseFloat(-0) !== 0) {
+  throw new Test262Error('#5: parseFloat(-0) === 0. Actual: ' + (parseFloat(-0)));
+} else {
+  if (1 / parseFloat(-0) !== Number.POSITIVE_INFINITY) {
+    throw new Test262Error('#5: parseFloat(-0) === +0. Actual: ' + (parseFloat(-0)));
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T3.js
new file mode 100644
index 0000000000..fb3d33c76a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T3.js
@@ -0,0 +1,13 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for undefined and null
+---*/
+
+assert.sameValue(parseFloat(undefined), NaN, "undefined");
+assert.sameValue(parseFloat(null), NaN, "null");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T4.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T4.js
new file mode 100644
index 0000000000..3975eef777
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T4.js
@@ -0,0 +1,13 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for Boolean object
+---*/
+
+assert.sameValue(parseFloat(new Boolean(true)), NaN, "new Boolean(true)");
+assert.sameValue(parseFloat(new Boolean(false)), NaN, "new Boolean(false)");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T5.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T5.js
new file mode 100644
index 0000000000..e8af41a386
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T5.js
@@ -0,0 +1,30 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for Number object
+---*/
+
+//CHECK#1
+if (parseFloat(new Number(-1.1)) !== parseFloat("-1.1")) {
+  throw new Test262Error('#1: parseFloat(new Number(-1.1)) === parseFloat("-1.1"). Actual: ' + (parseFloat(new Number(-1.1))));
+}
+
+//CHECK#2
+if (parseFloat(new Number(Infinity)) !== parseFloat("Infinity")) {
+  throw new Test262Error('#2: parseFloat(new Number(Infinity)) === parseFloat("Infinity"). Actual: ' + (parseFloat(new Number(Infinity))));
+}
+
+//CHECK#3
+if (String(parseFloat(new Number(NaN))) !== "NaN") {
+  throw new Test262Error('#3: String(parseFloat(new Number(NaN))) === "NaN". Actual: ' + (String(parseFloat(new Number(NaN)))));
+}
+
+//CHECK#4
+if (parseFloat(new Number(.01e+2)) !== parseFloat(".01e+2")) {
+  throw new Test262Error('#4: parseFloat(new Number(.01e+2)) === parseFloat(".01e+2"). Actual: ' + (parseFloat(new Number(.01e+2))));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T6.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T6.js
new file mode 100644
index 0000000000..47282fe4d0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T6.js
@@ -0,0 +1,35 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: Checking for String object
+---*/
+
+//CHECK#1
+if (parseFloat(new String("-1.1")) !== parseFloat("-1.1")) {
+  throw new Test262Error('#1: parseFloat(new String("-1.1")) === parseFloat("-1.1"). Actual: ' + (parseFloat(new String("-1.1"))));
+}
+
+//CHECK#2
+if (parseFloat(new String("Infinity")) !== parseFloat("Infinity")) {
+  throw new Test262Error('#2: parseFloat(new String("Infinity")) === parseFloat("Infinity"). Actual: ' + (parseFloat(new String("Infinity"))));
+}
+
+//CHECK#3
+if (String(parseFloat(new String("NaN"))) !== "NaN") {
+  throw new Test262Error('#3: String(parseFloat(new String("NaN"))) === "NaN". Actual: ' + (String(parseFloat(new String("NaN")))));
+}
+
+//CHECK#4
+if (parseFloat(new String(".01e+2")) !== parseFloat(".01e+2")) {
+  throw new Test262Error('#4: parseFloat(new String(".01e+2")) === parseFloat(".01e+2"). Actual: ' + (parseFloat(new String(".01e+2"))));
+}
+
+//CHECK#5
+if (String(parseFloat(new String("false"))) !== "NaN") {
+  throw new Test262Error('#5: String(parseFloat(new String("false"))) === "NaN". Actual: ' + (String(parseFloat(new String("false")))));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T7.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T7.js
new file mode 100644
index 0000000000..e2d332b758
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A1_T7.js
@@ -0,0 +1,127 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator use ToString
+esid: sec-parsefloat-string
+description: If Type(value) is Object, evaluate ToPrimitive(value, String)
+---*/
+
+//CHECK#1
+var object = {
+  valueOf: function() {
+    return 1
+  }
+};
+assert.sameValue(parseFloat(object), NaN, "{valueOf: function() {return 1}}");
+
+//CHECK#2
+var object = {
+  valueOf: function() {
+    return 1
+  },
+  toString: function() {
+    return 0
+  }
+};
+if (parseFloat(object) !== 0) {
+  throw new Test262Error('#2: var object = {valueOf: function() {return 1}, toString: function() {return 0}}; parseFloat(object) === 0. Actual: ' + (parseFloat(object)));
+}
+
+//CHECK#3
+var object = {
+  valueOf: function() {
+    return 1
+  },
+  toString: function() {
+    return {}
+  }
+};
+if (parseFloat(object) !== 1) {
+  throw new Test262Error('#3: var object = {valueOf: function() {return 1}, toString: function() {return {}}}; parseFloat(object) === 1. Actual: ' + (parseFloat(object)));
+}
+
+//CHECK#4
+try {
+  var object = {
+    valueOf: function() {
+      throw "error"
+    },
+    toString: function() {
+      return 1
+    }
+  };
+  if (parseFloat(object) !== 1) {
+    throw new Test262Error('#4.1: var object = {valueOf: function() {throw "error"}, toString: function() {return 1}}; parseFloat(object) === 1. Actual: ' + (parseFloat(object)));
+  }
+}
+catch (e) {
+  if (e === "error") {
+    throw new Test262Error('#4.2: var object = {valueOf: function() {throw "error"}, toString: function() {return 1}}; parseFloat(object) not throw "error"');
+  } else {
+    throw new Test262Error('#4.3: var object = {valueOf: function() {throw "error"}, toString: function() {return 1}}; parseFloat(object) not throw Error. Actual: ' + (e));
+  }
+}
+
+//CHECK#5
+var object = {
+  toString: function() {
+    return 1
+  }
+};
+if (parseFloat(object) !== 1) {
+  throw new Test262Error('#5: var object = {toString: function() {return 1}}; parseFloat(object) === 1. Actual: ' + (parseFloat(object)));
+}
+
+//CHECK#6
+var object = {
+  valueOf: function() {
+    return {}
+  },
+  toString: function() {
+    return 1
+  }
+}
+if (parseFloat(object) !== 1) {
+  throw new Test262Error('#6: var object = {valueOf: function() {return {}}, toString: function() {return 1}}; parseFloat(object) === 1. Actual: ' + (parseFloat(object)));
+}
+
+//CHECK#7
+try {
+  var object = {
+    valueOf: function() {
+      return 1
+    },
+    toString: function() {
+      throw "error"
+    }
+  };
+  parseFloat(object);
+  throw new Test262Error('#7.1: var object = {valueOf: function() {return 1}, toString: function() {throw "error"}}; parseFloat(object) throw "error". Actual: ' + (parseFloat(object)));
+}
+catch (e) {
+  if (e !== "error") {
+    throw new Test262Error('#7.2: var object = {valueOf: function() {return 1}, toString: function() {throw "error"}}; parseFloat(object) throw "error". Actual: ' + (e));
+  }
+}
+
+//CHECK#8
+try {
+  var object = {
+    valueOf: function() {
+      return {}
+    },
+    toString: function() {
+      return {}
+    }
+  };
+  parseFloat(object);
+  throw new Test262Error('#8.1: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; parseFloat(object) throw TypeError. Actual: ' + (parseFloat(object)));
+}
+catch (e) {
+  if ((e instanceof TypeError) !== true) {
+    throw new Test262Error('#8.2: var object = {valueOf: function() {return {}}, toString: function() {return {}}}; parseFloat(object) throw TypeError. Actual: ' + (e));
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T1.js
new file mode 100644
index 0000000000..8208fe2d4c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: TAB (U+0009)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u00091.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u00091.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u00091.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u0009\u0009-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u0009\\u0009-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u0009\u0009-1.1")));
+}
+
+//CHECK#3
+if (parseFloat("	1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#3: parseFloat("	1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("	1.1")));
+}
+
+//CHECK#4
+if (parseFloat("			1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#4: parseFloat("			1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("			1.1")));
+}
+
+//CHECK#5
+if (parseFloat("			\u0009			\u0009-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#5: parseFloat("			\\u0009			\\u0009-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("			\u0009			\u0009-1.1")));
+}
+
+//CHECK#6
+assert.sameValue(parseFloat("\u0009"), NaN, "'\u0009'");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10.js
new file mode 100644
index 0000000000..d084a46b1a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: USP"
+---*/
+
+//CHECK#
+var n;
+var uspU = ["\u1680", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006", "\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000"];
+var uspS = ["1680", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "200A", "202F", "205F", "3000"];
+for (var index = 0; index < uspU.length; index++) {
+  if (parseFloat(uspU[index] + "1.1") !== parseFloat("1.1")) {
+    throw new Test262Error('#1.' + uspS[index] + ' ');
+  }
+  if (parseFloat(uspU[index] + uspU[index] + uspU[index] + "1.1") !== parseFloat("1.1")) {
+    throw new Test262Error('#2.' + uspS[index] + ' ');
+  }
+  n = parseFloat(uspU[index]);
+  if (!(n !== n)) {
+    throw new Test262Error('#3.' + uspS[index] + ' ');
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js
new file mode 100644
index 0000000000..a687528aab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parsefloat-string
+description: >
+  Leading U+180E is not recognized as whitespace
+info: |
+  18.2.4 parseFloat (string)
+
+  ...
+  3. Let trimmedString be a substring of inputString consisting of the
+     leftmost code unit that is not a StrWhiteSpaceChar and all code units
+     to the right of that code unit. (In other words, remove leading white
+     space.) If inputString does not contain any such code units, let
+     trimmedString be the empty string.
+  4. If neither trimmedString nor any prefix of trimmedString satisfies the
+     syntax of a StrDecimalLiteral (see 7.1.3.1), return NaN.
+  ...
+features: [u180e]
+---*/
+
+var mongolianVowelSeparator = "\u180E";
+
+assert.sameValue(parseFloat(mongolianVowelSeparator + "1.1"), NaN, "Single leading U+180E");
+assert.sameValue(parseFloat(mongolianVowelSeparator + mongolianVowelSeparator + mongolianVowelSeparator + "1.1"), NaN, "Multiple leading U+180E");
+assert.sameValue(parseFloat(mongolianVowelSeparator), NaN, "Only U+180E");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T2.js
new file mode 100644
index 0000000000..68742bb353
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T2.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: SP (U+0020)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u00201.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u00201.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u00201.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u0020\u0020-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u0020\\u0020-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u0020\u0020-1.1")));
+}
+
+//CHECK#3
+if (parseFloat(" 1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#3: parseFloat(" 1.1") === parseFloat("1.1"). Actual: ' + (parseFloat(" 1.1")));
+}
+
+//CHECK#4
+if (parseFloat("       1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#4: parseFloat("       1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("       1.1")));
+}
+
+//CHECK#5
+if (parseFloat("       \u0020       \u0020-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#5: parseFloat("       \\u0020       \\u0020-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("       \u0020       \u0020-1.1")));
+}
+
+//CHECK#6
+assert.sameValue(parseFloat("\u0020"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T3.js
new file mode 100644
index 0000000000..214e43ef69
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: NBSB (U+00A0)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u00A01.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u00A01.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u00A01.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u00A0\u00A0-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u00A0\\u00A0-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u00A0\u00A0-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u00A0"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T4.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T4.js
new file mode 100644
index 0000000000..73dd7ee47d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T4.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: FF (U+000C)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u000C1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u000C1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u000C1.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u000C\u000C-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u000C\\u000C-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u000C\u000C-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u000C"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T5.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T5.js
new file mode 100644
index 0000000000..fdd684485e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T5.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: VT (U+000B)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u000B1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u000B1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u000B1.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u000B\u000B-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u000B\\u000B-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u000B\u000B-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u000B"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T6.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T6.js
new file mode 100644
index 0000000000..6baa99df24
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T6.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: CR (U+000D)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u000D1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u000D1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u000D1.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u000D\u000D-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u000D\\u000D-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u000D\u000D-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u000D"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T7.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T7.js
new file mode 100644
index 0000000000..5f5312cd9b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T7.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: LF (U+000A)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u000A1.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u000A1.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u000A1.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u000A\u000A-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u000A\\u000A-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u000A\u000A-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u000A"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T8.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T8.js
new file mode 100644
index 0000000000..d4a43ee11f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T8.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: LS (U+2028)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u20281.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u20281.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u20281.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u2028\u2028-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u2028\\u2028-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u2028\u2028-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u2028"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T9.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T9.js
new file mode 100644
index 0000000000..7b6b761c74
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A2_T9.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator remove leading StrWhiteSpaceChar
+esid: sec-parsefloat-string
+description: "StrWhiteSpaceChar :: PS (U+2029)"
+---*/
+
+//CHECK#1
+if (parseFloat("\u20291.1") !== parseFloat("1.1")) {
+  throw new Test262Error('#1: parseFloat("\\u20291.1") === parseFloat("1.1"). Actual: ' + (parseFloat("\u20291.1")));
+}
+
+//CHECK#2
+if (parseFloat("\u2029\u2029-1.1") !== parseFloat("-1.1")) {
+  throw new Test262Error('#2: parseFloat("\\u2029\\u2029-1.1") === parseFloat("-1.1"). Actual: ' + (parseFloat("\u2029\u2029-1.1")));
+}
+
+//CHECK#3
+assert.sameValue(parseFloat("\u2029"), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T1.js
new file mode 100644
index 0000000000..98fc07e9b2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    If neither Result(2) nor any prefix of Result(2) satisfies the syntax of a
+    StrDecimalLiteral (see 9.3.1), return NaN
+esid: sec-parsefloat-string
+description: parseFloat("some string") return NaN
+---*/
+
+assert.sameValue(parseFloat("str"), NaN, "str");
+assert.sameValue(parseFloat("s1"), NaN, "s1");
+assert.sameValue(parseFloat(""), NaN, "");
+assert.sameValue(parseFloat("+"), NaN, "+");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T2.js
new file mode 100644
index 0000000000..4c0cf2cde7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T2.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    If neither Result(2) nor any prefix of Result(2) satisfies the syntax of a
+    StrDecimalLiteral (see 9.3.1), return NaN
+esid: sec-parsefloat-string
+description: parseFloat("wrong number format with ExponentIndicator") return NaN
+---*/
+
+assert.sameValue(parseFloat("e1"), NaN, "e1");
+assert.sameValue(parseFloat("e-1"), NaN, "e-1");
+assert.sameValue(parseFloat("E+1"), NaN, "E+1");
+assert.sameValue(parseFloat("E0"), NaN, "E0");
+assert.sameValue(parseFloat("-.e-1"), NaN, "-.e-1");
+assert.sameValue(parseFloat(".e1"), NaN, ".e1");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T3.js
new file mode 100644
index 0000000000..e6a1358041
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A3_T3.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    If neither Result(2) nor any prefix of Result(2) satisfies the syntax of a
+    StrDecimalLiteral (see 9.3.1), return NaN
+esid: sec-parsefloat-string
+description: parseFloat("wrong numbr format") return NaN
+---*/
+
+assert.sameValue(parseFloat(".x"), NaN, ".x");
+assert.sameValue(parseFloat("+x"), NaN, "+x");
+assert.sameValue(parseFloat("infinity"), NaN, "infinity");
+assert.sameValue(parseFloat("A"), NaN, "A");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T1.js
new file mode 100644
index 0000000000..d14624f99b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T1.js
@@ -0,0 +1,57 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: Some wrong number
+---*/
+
+//CHECK#1
+if (parseFloat("0x") !== 0) {
+  throw new Test262Error('#1: parseFloat("0x") === 0. Actual: ' + (parseFloat("0x")));
+}
+
+//CHECK#2
+if (parseFloat("11x") !== 11) {
+  throw new Test262Error('#2: parseFloat("11x") === 11. Actual: ' + (parseFloat("11x")));
+}
+
+//CHECK#3
+if (parseFloat("11s1") !== 11) {
+  throw new Test262Error('#3: parseFloat("11s1") === 11. Actual: ' + (parseFloat("11s1")));
+}
+
+//CHECK#4
+if (parseFloat("11.s1") !== 11) {
+  throw new Test262Error('#4: parseFloat("11.s1") === 11. Actual: ' + (parseFloat("11.s1")));
+}
+
+//CHECK#5
+if (parseFloat(".0s1") !== 0) {
+  throw new Test262Error('#5: parseFloat(".0s1") === 0. Actual: ' + (parseFloat(".0s1")));
+}
+
+//CHECK#6
+if (parseFloat("1.s1") !== 1) {
+  throw new Test262Error('#6: parseFloat("1.s1") === 1. Actual: ' + (parseFloat("1.s1")));
+}
+
+//CHECK#7
+if (parseFloat("1..1") !== 1) {
+  throw new Test262Error('#7: parseFloat("1..1") === 1. Actual: ' + (parseFloat("1..1")));
+}
+
+//CHECK#8
+if (parseFloat("0.1.1") !== 0.1) {
+  throw new Test262Error('#8: parseFloat("0.1.1") === 0.1. Actual: ' + (parseFloat("0.1.1")));
+}
+
+//CHECK#9
+if (parseFloat("0. 1") !== 0) {
+  throw new Test262Error('#9: parseFloat("0. 1") === 0. Actual: ' + (parseFloat("0. 1")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T2.js
new file mode 100644
index 0000000000..ab423fff7d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T2.js
@@ -0,0 +1,37 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: With ExponentIndicator
+---*/
+
+//CHECK#1
+if (parseFloat("1ex") !== 1) {
+  throw new Test262Error('#1: parseFloat("1ex") === 1. Actual: ' + (parseFloat("1ex")));
+}
+
+//CHECK#2
+if (parseFloat("1e-x") !== 1) {
+  throw new Test262Error('#2: parseFloat("1e-x") === 1. Actual: ' + (parseFloat("1e-x")));
+}
+
+//CHECK#3
+if (parseFloat("1e1x") !== 10) {
+  throw new Test262Error('#3: parseFloat("1e1x") === 10. Actual: ' + (parseFloat("1e1x")));
+}
+
+//CHECK#4
+if (parseFloat("1e-1x") !== 0.1) {
+  throw new Test262Error('#4: parseFloat("1e-1x") === 0.1. Actual: ' + (parseFloat("1e-1x")));
+}
+
+//CHECK#5
+if (parseFloat("0.1e-1x") !== 0.01) {
+  throw new Test262Error('#5: parseFloat("0.1e-1x") === 0.01. Actual: ' + (parseFloat("0.1e-1x")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T3.js
new file mode 100644
index 0000000000..d79b75f0b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T3.js
@@ -0,0 +1,92 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: StrDecimalLiteral not contain HexIntegerLiteral
+---*/
+
+//CHECK#0
+if (parseFloat("0x0") !== 0) {
+  throw new Test262Error('#0: parseFloat("0x0") === 0. Actual: ' + (parseFloat("0x0")));
+}
+
+//CHECK#1
+if (parseFloat("0x1") !== 0) {
+  throw new Test262Error('#1: parseFloat("0x1") === 0. Actual: ' + (parseFloat("0x1")));
+}
+
+//CHECK#2
+if (parseFloat("0x2") !== 0) {
+  throw new Test262Error('#2: parseFloat("0x2") === 0. Actual: ' + (parseFloat("0x2")));
+}
+
+//CHECK#3
+if (parseFloat("0x3") !== 0) {
+  throw new Test262Error('#3: parseFloat("0x3") === 0. Actual: ' + (parseFloat("0x3")));
+}
+
+//CHECK#4
+if (parseFloat("0x4") !== 0) {
+  throw new Test262Error('#4: parseFloat("0x4") === 0. Actual: ' + (parseFloat("0x4")));
+}
+
+//CHECK#5
+if (parseFloat("0x5") !== 0) {
+  throw new Test262Error('#5: parseFloat("0x5") === 0. Actual: ' + (parseFloat("0x5")));
+}
+
+//CHECK#6
+if (parseFloat("0x6") !== 0) {
+  throw new Test262Error('#6: parseFloat("0x6") === 0. Actual: ' + (parseFloat("0x6")));
+}
+
+//CHECK#7
+if (parseFloat("0x7") !== 0) {
+  throw new Test262Error('#7: parseFloat("0x7") === 0. Actual: ' + (parseFloat("0x7")));
+}
+
+//CHECK#8
+if (parseFloat("0x8") !== 0) {
+  throw new Test262Error('#8: parseFloat("0x8") === 0. Actual: ' + (parseFloat("0x8")));
+}
+
+//CHECK#9
+if (parseFloat("0x9") !== 0) {
+  throw new Test262Error('#9: parseFloat("0x9") === 0. Actual: ' + (parseFloat("0x9")));
+}
+
+//CHECK#A
+if (parseFloat("0xA") !== 0) {
+  throw new Test262Error('#A: parseFloat("0xA") === 0. Actual: ' + (parseFloat("0xA")));
+}
+
+//CHECK#B
+if (parseFloat("0xB") !== 0) {
+  throw new Test262Error('#B: parseFloat("0xB") === 0. Actual: ' + (parseFloat("0xB")));
+}
+
+//CHECK#C
+if (parseFloat("0xC") !== 0) {
+  throw new Test262Error('#C: parseFloat("0xC") === 0. Actual: ' + (parseFloat("0xC")));
+}
+
+//CHECK#D
+if (parseFloat("0xD") !== 0) {
+  throw new Test262Error('#D: parseFloat("0xD") === 0. Actual: ' + (parseFloat("0xD")));
+}
+
+//CHECK#E
+if (parseFloat("0xE") !== 0) {
+  throw new Test262Error('#E: parseFloat("0xE") === 0. Actual: ' + (parseFloat("0xE")));
+}
+
+//CHECK#F
+if (parseFloat("0xF") !== 0) {
+  throw new Test262Error('#F: parseFloat("0xF") === 0. Actual: ' + (parseFloat("0xF")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T4.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T4.js
new file mode 100644
index 0000000000..22db18f194
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T4.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: "\"Infinity\"+\"some string\""
+---*/
+
+//CHECK#1
+if (parseFloat("Infinity1") !== Number.POSITIVE_INFINITY) {
+  throw new Test262Error('#1: parseFloat("Infinity1") === Number.POSITIVE_INFINITY. Actual: ' + (parseFloat("Infinity1")));
+}
+
+//CHECK#2
+if (parseFloat("Infinityx") !== Number.POSITIVE_INFINITY) {
+  throw new Test262Error('#2: parseFloat("Infinityx") === Number.POSITIVE_INFINITY. Actual: ' + (parseFloat("Infinityx")));
+}
+
+//CHECK#3
+if (parseFloat("Infinity+1") !== Number.POSITIVE_INFINITY) {
+  throw new Test262Error('#3: parseFloat("Infinity+1") === Number.POSITIVE_INFINITY. Actual: ' + (parseFloat("Infinity+1")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T5.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T5.js
new file mode 100644
index 0000000000..8bc1274b51
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T5.js
@@ -0,0 +1,62 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: Checking DecimalDigits . DecimalDigits_opt ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("-11.string") !== -11) {
+  throw new Test262Error('#1: parseFloat("-11.string") === -11. Actual: ' + (parseFloat("-11.string")));
+}
+
+//CHECK#2
+if (parseFloat("01.string") !== 1) {
+  throw new Test262Error('#2: parseFloat("01.string") === 1. Actual: ' + (parseFloat("01.string")));
+}
+
+//CHECK#3
+if (parseFloat("+11.1string") !== 11.1) {
+  throw new Test262Error('#3: parseFloat("+11.1string") === 11.1. Actual: ' + (parseFloat("+11.1string")));
+}
+
+//CHECK#4
+if (parseFloat("01.1string") !== 1.1) {
+  throw new Test262Error('#4: parseFloat("01.1string") === 1.1. Actual: ' + (parseFloat("01.1string")));
+}
+
+//CHECK#5
+if (parseFloat("-11.e-1string") !== -1.1) {
+  throw new Test262Error('#5: parseFloat("-11.e-1string") === -1.1. Actual: ' + (parseFloat("-11.e-1string")));
+}
+
+//CHECK#6
+if (parseFloat("01.e1string") !== 10) {
+  throw new Test262Error('#6: parseFloat("01.e1string") === 10. Actual: ' + (parseFloat("01.e1string")));
+}
+
+//CHECK#7
+if (parseFloat("+11.22e-1string") !== 1.122) {
+  throw new Test262Error('#7: parseFloat("+11.22e-1string") === 1.122. Actual: ' + (parseFloat("+11.22e-1string")));
+}
+
+//CHECK#8
+if (parseFloat("01.01e1string") !== 10.1) {
+  throw new Test262Error('#8: parseFloat("01.01e1string") === 10.1. Actual: ' + (parseFloat("01.01e1string")));
+}
+
+//CHECK#9
+if (parseFloat("001.string") !== 1) {
+  throw new Test262Error('#9: parseFloat("001.string") === 1. Actual: ' + (parseFloat("001.string")));
+}
+
+//CHECK#10
+if (parseFloat("010.string") !== 10) {
+  throw new Test262Error('#10: parseFloat("010.string") === 10. Actual: ' + (parseFloat("010.string")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T6.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T6.js
new file mode 100644
index 0000000000..50bf94883e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T6.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: Checking . DecimalDigits ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("+.1string") !== 0.1) {
+  throw new Test262Error('#1: parseFloat("+.1string") === 0.1. Actual: ' + (parseFloat("+.1string")));
+}
+
+//CHECK#2
+if (parseFloat(".01string") !== 0.01) {
+  throw new Test262Error('#2: parseFloat(".01string") === 0.01. Actual: ' + (parseFloat(".01string")));
+}
+
+//CHECK#3
+if (parseFloat("+.22e-1string") !== 0.022) {
+  throw new Test262Error('#3: parseFloat("+.22e-1string") === 0.022. Actual: ' + (parseFloat("+.22e-1string")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T7.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T7.js
new file mode 100644
index 0000000000..e69508dcd0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A4_T7.js
@@ -0,0 +1,47 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Compute the longest prefix of Result(2), which might be Result(2) itself,
+    which satisfies the syntax of a StrDecimalLiteral
+esid: sec-parsefloat-string
+description: Checking DecimalDigits ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("-11string") !== -11) {
+  throw new Test262Error('#1: parseFloat("-11string") === -11. Actual: ' + (parseFloat("-11string")));
+}
+
+//CHECK#2
+if (parseFloat("01string") !== 1) {
+  throw new Test262Error('#2: parseFloat("01string") === 1. Actual: ' + (parseFloat("01string")));
+}
+
+//CHECK#3
+if (parseFloat("-11e-1string") !== -1.1) {
+  throw new Test262Error('#3: parseFloat("-11e-1string") === -1.1. Actual: ' + (parseFloat("-11e-1string")));
+}
+
+//CHECK#4
+if (parseFloat("01e1string") !== 10) {
+  throw new Test262Error('#4: parseFloat("01e1string") === 10. Actual: ' + (parseFloat("01e1string")));
+}
+
+//CHECK#5
+if (parseFloat("001string") !== 1) {
+  throw new Test262Error('#5: parseFloat("001string") === 1. Actual: ' + (parseFloat("001string")));
+}
+
+//CHECK#6
+if (parseFloat("1e001string") !== 10) {
+  throw new Test262Error('#6: parseFloat("1e001string") === 10. Actual: ' + (parseFloat("1e001string")));
+}
+
+//CHECK#7
+if (parseFloat("010string") !== 10) {
+  throw new Test262Error('#7: parseFloat("010string") === 10. Actual: ' + (parseFloat("010string")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T1.js
new file mode 100644
index 0000000000..73ca96cce1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Return the number value for the MV of Result(4)
+esid: sec-parsefloat-string
+description: Checking Infinity
+---*/
+
+//CHECK#1
+if (parseFloat("Infinity") !== Number.POSITIVE_INFINITY) {
+  throw new Test262Error('#1: parseFloat("Infinity") === Number.POSITIVE_INFINITY. Actual: ' + (parseFloat("Infinity")));
+}
+
+//CHECK#2
+if (parseFloat("+Infinity") !== Number.POSITIVE_INFINITY) {
+  throw new Test262Error('#2: parseFloat("+Infinity") === Number.POSITIVE_INFINITY. Actual: ' + (parseFloat("+Infinity")));
+}
+
+//CHECK#3
+if (parseFloat("-Infinity") !== Number.NEGATIVE_INFINITY) {
+  throw new Test262Error('#3: parseFloat("-Infinity") === Number.NEGATIVE_INFINITY. Actual: ' + (parseFloat("-Infinity")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T2.js
new file mode 100644
index 0000000000..4d54486664
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T2.js
@@ -0,0 +1,60 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Return the number value for the MV of Result(4)
+esid: sec-parsefloat-string
+description: Checking DecimalDigits . DecimalDigits_opt ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("-11.") !== -11) {
+  throw new Test262Error('#1: parseFloat("-11.") === -11. Actual: ' + (parseFloat("-11.")));
+}
+
+//CHECK#2
+if (parseFloat("01.") !== 1) {
+  throw new Test262Error('#2: parseFloat("01.") === 1. Actual: ' + (parseFloat("01.")));
+}
+
+//CHECK#3
+if (parseFloat("+11.1") !== 11.1) {
+  throw new Test262Error('#3: parseFloat("+11.1") === 11.1. Actual: ' + (parseFloat("+11.1")));
+}
+
+//CHECK#4
+if (parseFloat("01.1") !== 1.1) {
+  throw new Test262Error('#4: parseFloat("01.1") === 1.1. Actual: ' + (parseFloat("01.1")));
+}
+
+//CHECK#5
+if (parseFloat("-11.e-1") !== -1.1) {
+  throw new Test262Error('#5: parseFloat("-11.e-1") === -1.1. Actual: ' + (parseFloat("-11.e-1")));
+}
+
+//CHECK#6
+if (parseFloat("01.e1") !== 10) {
+  throw new Test262Error('#6: parseFloat("01.e1") === 10. Actual: ' + (parseFloat("01.e1")));
+}
+
+//CHECK#7
+if (parseFloat("+11.22e-1") !== 1.122) {
+  throw new Test262Error('#7: parseFloat("+11.22e-1") === 1.122. Actual: ' + (parseFloat("+11.22e-1")));
+}
+
+//CHECK#8
+if (parseFloat("01.01e1") !== 10.1) {
+  throw new Test262Error('#8: parseFloat("01.01e1") === 10.1. Actual: ' + (parseFloat("01.01e1")));
+}
+
+//CHECK#9
+if (parseFloat("001.") !== 1) {
+  throw new Test262Error('#9: parseFloat("001.") === 1. Actual: ' + (parseFloat("001.")));
+}
+
+//CHECK#10
+if (parseFloat("010.") !== 10) {
+  throw new Test262Error('#10: parseFloat("010.") === 10. Actual: ' + (parseFloat("010.")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T3.js
new file mode 100644
index 0000000000..b00f364f9c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T3.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Return the number value for the MV of Result(4)
+esid: sec-parsefloat-string
+description: Checking . DecimalDigits ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("+.1") !== 0.1) {
+  throw new Test262Error('#1: parseFloat("+.1") === 0.1. Actual: ' + (parseFloat("+.1")));
+}
+
+//CHECK#2
+if (parseFloat(".01") !== 0.01) {
+  throw new Test262Error('#2: parseFloat(".01") === 0.01. Actual: ' + (parseFloat(".01")));
+}
+
+//CHECK#3
+if (parseFloat("+.22e-1") !== 0.022) {
+  throw new Test262Error('#3: parseFloat("+.22e-1") === 0.022. Actual: ' + (parseFloat("+.22e-1")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T4.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T4.js
new file mode 100644
index 0000000000..6c1153f518
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A5_T4.js
@@ -0,0 +1,45 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Return the number value for the MV of Result(4)
+esid: sec-parsefloat-string
+description: Checking DecimalDigits ExponentPart_opt
+---*/
+
+//CHECK#1
+if (parseFloat("-11") !== -11) {
+  throw new Test262Error('#1: parseFloat("-11") === -11. Actual: ' + (parseFloat("-11")));
+}
+
+//CHECK#2
+if (parseFloat("01") !== 1) {
+  throw new Test262Error('#2: parseFloat("01") === 1. Actual: ' + (parseFloat("01")));
+}
+
+//CHECK#3
+if (parseFloat("-11e-1") !== -1.1) {
+  throw new Test262Error('#3: parseFloat("-11e-1") === -1.1. Actual: ' + (parseFloat("-11e-1")));
+}
+
+//CHECK#4
+if (parseFloat("01e1") !== 10) {
+  throw new Test262Error('#4: parseFloat("01e1") === 10. Actual: ' + (parseFloat("01e1")));
+}
+
+//CHECK#5
+if (parseFloat("001") !== 1) {
+  throw new Test262Error('#5: parseFloat("001") === 1. Actual: ' + (parseFloat("001")));
+}
+
+//CHECK#6
+if (parseFloat("1e001") !== 10) {
+  throw new Test262Error('#6: parseFloat("1e001") === 10. Actual: ' + (parseFloat("1e001")));
+}
+
+//CHECK#7
+if (parseFloat("010") !== 10) {
+  throw new Test262Error('#7: parseFloat("010") === 10. Actual: ' + (parseFloat("010")));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A6.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A6.js
new file mode 100644
index 0000000000..d75a847379
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A6.js
@@ -0,0 +1,58 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    parseFloat may interpret only a leading portion of the string as
+    a number value; it ignores any characters that cannot be interpreted as part
+    of the notation of an decimal literal, and no indication is given that any such
+    characters were ignored.
+esid: sec-parsefloat-string
+description: Complex test without eval
+includes: [decimalToHexString.js]
+---*/
+
+//CHECK
+var errorCount = 0;
+var count = 0;
+var indexP;
+var indexO = 0;
+for (var index = 0; index <= 65535; index++) {
+  if ((index < 0x0030) || (index > 0x0039)) {
+    if (parseFloat("0.1e1" + String.fromCharCode(index)) !== 1) {
+      if (indexO === 0) {
+        indexO = index;
+      } else {
+        if ((index - indexP) !== 1) {
+          if ((indexP - indexO) !== 0) {
+            var hexP = decimalToHexString(indexP);
+            var hexO = decimalToHexString(indexO);
+            throw new Test262Error('#' + hexO + '-' + hexP + ' ');
+          }
+          else {
+            var hexP = decimalToHexString(indexP);
+            throw new Test262Error('#' + hexP + ' ');
+          }
+          indexO = index;
+        }
+      }
+      indexP = index;
+      errorCount++;
+    }
+    count++;
+  }
+}
+
+if (errorCount > 0) {
+  if ((indexP - indexO) !== 0) {
+    var hexP = decimalToHexString(indexP);
+    var hexO = decimalToHexString(indexO);
+    throw new Test262Error('#' + hexO + '-' + hexP + ' ');
+  } else {
+    var hexP = decimalToHexString(indexP);
+    throw new Test262Error('#' + hexP + ' ');
+  }
+  throw new Test262Error('Total error: ' + errorCount + ' bad Unicode character in ' + count + ' ');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.1.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.1.js
new file mode 100644
index 0000000000..a3096f045c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The length property of parseFloat has the attribute DontEnum
+esid: sec-parsefloat-string
+description: Checking use propertyIsEnumerable, for-in
+---*/
+
+//CHECK#1
+if (parseFloat.propertyIsEnumerable('length') !== false) {
+  throw new Test262Error('#1: parseFloat.propertyIsEnumerable(\'length\') === false. Actual: ' + (parseFloat.propertyIsEnumerable('length')));
+}
+
+//CHECK#2
+var result = true;
+for (var p in parseFloat) {
+  if (p === "length") {
+    result = false;
+  }
+}
+
+if (result !== true) {
+  throw new Test262Error('#2: result = true; for (p in parseFloat) { if (p === "length") result = false; }  result === true;');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.2.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.2.js
new file mode 100644
index 0000000000..58ecde89fd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.2.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The length property of parseFloat does not have the attribute DontDelete
+esid: sec-parsefloat-string
+description: Checking use hasOwnProperty, delete
+---*/
+
+//CHECK#1
+if (parseFloat.hasOwnProperty('length') !== true) {
+  throw new Test262Error('#1: parseFloat.hasOwnProperty(\'length\') === true. Actual: ' + (parseFloat.hasOwnProperty('length')));
+}
+
+delete parseFloat.length;
+
+//CHECK#2
+if (parseFloat.hasOwnProperty('length') !== false) {
+  throw new Test262Error('#2: delete parseFloat.length; parseFloat.hasOwnProperty(\'length\') === false. Actual: ' + (parseFloat.hasOwnProperty('length')));
+}
+
+//CHECK#3
+if (parseFloat.length === undefined) {
+  throw new Test262Error('#3: delete parseFloat.length; parseFloat.length !== undefined');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.3.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.3.js
new file mode 100644
index 0000000000..2080fc19ea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.3.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The length property of parseFloat has the attribute ReadOnly
+esid: sec-parsefloat-string
+description: Checking if varying the length property fails
+includes: [propertyHelper.js]
+---*/
+
+//CHECK#1
+var x = parseFloat.length;
+verifyNotWritable(parseFloat, "length", null, Infinity);
+if (parseFloat.length !== x) {
+  throw new Test262Error('#1: x = parseFloat.length; parseFloat.length = Infinity; parseFloat.length === x. Actual: ' + (parseFloat.length));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.4.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.4.js
new file mode 100644
index 0000000000..51baab1b49
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.4.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The length property of parseFloat is 1
+esid: sec-parsefloat-string
+description: parseFloat.length === 1
+---*/
+
+//CHECK#1
+if (parseFloat.length !== 1) {
+  throw new Test262Error('#1: parseFloat.length === 1. Actual: ' + (parseFloat.length));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.5.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.5.js
new file mode 100644
index 0000000000..a3d4b86c47
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.5.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The parseFloat property has the attribute DontEnum
+esid: sec-parsefloat-string
+description: Checking use propertyIsEnumerable, for-in
+---*/
+
+//CHECK#1
+if (this.propertyIsEnumerable('parseFloat') !== false) {
+  throw new Test262Error('#1:this.propertyIsEnumerable(\'parseFloat\') === false. Actual: ' + (this.propertyIsEnumerable('parseFloat')));
+}
+
+//CHECK#2
+var result = true;
+for (var p in this) {
+  if (p === "parseFloat") {
+    result = false;
+  }
+}
+
+if (result !== true) {
+  throw new Test262Error('#2: result = true; for (p in this) { if (p === "parseFloat") result = false; }  result === true;');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.6.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.6.js
new file mode 100644
index 0000000000..f75114b28e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.6.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The parseFloat property has not prototype property
+esid: sec-parsefloat-string
+description: Checking parseFloat.prototype
+---*/
+
+//CHECK#1
+if (parseFloat.prototype !== undefined) {
+  throw new Test262Error('#1: parseFloat.prototype === undefined. Actual: ' + (parseFloat.prototype));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.7.js b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.7.js
new file mode 100644
index 0000000000..7899ac0750
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/S15.1.2.3_A7.7.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The parseFloat property can't be used as constructor
+esid: sec-parsefloat-string
+description: >
+    If property does not implement the internal [[Construct]] method,
+    throw a TypeError exception
+---*/
+
+//CHECK#1
+
+try {
+  new parseFloat();
+  throw new Test262Error('#1.1: new parseFloat() throw TypeError. Actual: ' + (new parseFloat()));
+} catch (e) {
+  if ((e instanceof TypeError) !== true) {
+    throw new Test262Error('#1.2: new parseFloat() throw TypeError. Actual: ' + (e));
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/browser.js b/js/src/tests/test262/built-ins/parseFloat/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/browser.js
diff --git a/js/src/tests/test262/built-ins/parseFloat/name.js b/js/src/tests/test262/built-ins/parseFloat/name.js
new file mode 100644
index 0000000000..05b701e234
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parsefloat-string
+description: >
+  parseFloat.name is "parseFloat".
+info: |
+  parseFloat (string)
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(parseFloat.name, "parseFloat");
+
+verifyNotEnumerable(parseFloat, "name");
+verifyNotWritable(parseFloat, "name");
+verifyConfigurable(parseFloat, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/not-a-constructor.js b/js/src/tests/test262/built-ins/parseFloat/not-a-constructor.js
new file mode 100644
index 0000000000..4bbe63515e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/not-a-constructor.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  parseFloat does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(isConstructor(parseFloat), false, 'isConstructor(parseFloat) must return false');
+
+assert.throws(TypeError, () => {
+  new parseFloat(1);
+}, '`new parseFloat(1)` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/prop-desc.js b/js/src/tests/test262/built-ins/parseFloat/prop-desc.js
new file mode 100644
index 0000000000..8ec6944669
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/prop-desc.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2019 Bocoup. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parsefloat-string
+description: >
+  Property descriptor for parseFloat
+info: |
+  Every other data property described in clauses 18 through 26 and in Annex B.2
+  has the attributes { [[Writable]]: true, [[Enumerable]]: false,
+  [[Configurable]]: true } unless otherwise specified.
+includes: [propertyHelper.js]
+---*/
+
+verifyNotEnumerable(this, "parseFloat");
+verifyWritable(this, "parseFloat");
+verifyConfigurable(this, "parseFloat");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/shell.js b/js/src/tests/test262/built-ins/parseFloat/shell.js
new file mode 100644
index 0000000000..a9bb766df3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/shell.js
@@ -0,0 +1,52 @@
+// GENERATED, DO NOT EDIT
+// file: decimalToHexString.js
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of various encoding operations.
+defines: [decimalToHexString, decimalToPercentHexString]
+---*/
+
+function decimalToHexString(n) {
+  var hex = "0123456789ABCDEF";
+  n >>>= 0;
+  var s = "";
+  while (n) {
+    s = hex[n & 0xf] + s;
+    n >>>= 4;
+  }
+  while (s.length < 4) {
+    s = "0" + s;
+  }
+  return s;
+}
+
+function decimalToPercentHexString(n) {
+  var hex = "0123456789ABCDEF";
+  return "%" + hex[(n >> 4) & 0xf] + hex[n & 0xf];
+}
+
+// file: isConstructor.js
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: |
+    Test if a given function is a constructor function.
+defines: [isConstructor]
+features: [Reflect.construct]
+---*/
+
+function isConstructor(f) {
+    if (typeof f !== "function") {
+      throw new Test262Error("isConstructor invoked with a non-function value");
+    }
+
+    try {
+        Reflect.construct(function(){}, [], f);
+    } catch (e) {
+        return false;
+    }
+    return true;
+}
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js
new file mode 100644
index 0000000000..14b98d1864
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dd-nsl-dd.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    StrDecimalDigits . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits NumericLiteralSeparator DecimalDigit
+
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1.0e-1_0"), 1.0e-1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js
new file mode 100644
index 0000000000..01245898d2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-minus-dds-nsl-dd.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    StrDecimalDigits . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits NumericLiteralSeparator DecimalDigit
+
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1.0e-10_0"), 1.0e-10);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js
new file mode 100644
index 0000000000..48424258de
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dd-nsl-dd.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    StrDecimalDigits . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits NumericLiteralSeparator DecimalDigit
+
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1.0e+1_0"), 1.0e+1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
new file mode 100644
index 0000000000..457d783a39
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-dot-dd-ep-sign-plus-dds-nsl-dd.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    StrDecimalDigits . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits NumericLiteralSeparator DecimalDigit
+
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1.0e+10_0"), 1.0e+10);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-nsl-dd-one-of.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-nsl-dd-one-of.js
new file mode 100644
index 0000000000..e1e630685b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dd-nsl-dd-one-of.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrUnsignedDecimalLiteral
+info: |
+  StrStrUnsignedDecimalLiteral :::
+    StrUnsignedDecimalLiteral
+
+
+  StrDecimalDigits :::
+    DecimalDigit
+    ...
+
+  DecimalDigit ::: one of
+    0 1 2 3 4 5 6 7 8 9
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1_0"), 1);
+assert.sameValue(parseFloat("1_1"), 1);
+assert.sameValue(parseFloat("1_2"), 1);
+assert.sameValue(parseFloat("1_3"), 1);
+assert.sameValue(parseFloat("1_4"), 1);
+assert.sameValue(parseFloat("1_5"), 1);
+assert.sameValue(parseFloat("1_6"), 1);
+assert.sameValue(parseFloat("1_7"), 1);
+assert.sameValue(parseFloat("1_8"), 1);
+assert.sameValue(parseFloat("1_9"), 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js
new file mode 100644
index 0000000000..6e4a68cc78
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-dot-dd-nsl-dd-ep-dd.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("10.00_01e2"), 10.00);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-nsl-dd.js
new file mode 100644
index 0000000000..ff3e565919
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dds-nsl-dd.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits
+info: |
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("123456789_0"), 123456789);
+assert.sameValue(parseFloat("123456789_1"), 123456789);
+assert.sameValue(parseFloat("123456789_2"), 123456789);
+assert.sameValue(parseFloat("123456789_3"), 123456789);
+assert.sameValue(parseFloat("123456789_4"), 123456789);
+assert.sameValue(parseFloat("123456789_5"), 123456789);
+assert.sameValue(parseFloat("123456789_6"), 123456789);
+assert.sameValue(parseFloat("123456789_7"), 123456789);
+assert.sameValue(parseFloat("123456789_8"), 123456789);
+assert.sameValue(parseFloat("123456789_9"), 123456789);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dd-ep.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dd-ep.js
new file mode 100644
index 0000000000..89166b0703
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dd-ep.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    ...
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat(".0_1e2"), .0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dds-ep.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dds-ep.js
new file mode 100644
index 0000000000..2259a4bbdf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dd-nsl-dds-ep.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    ...
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat(".1_01e2"), .1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dd-ep.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dd-ep.js
new file mode 100644
index 0000000000..2ba12f06c7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dd-ep.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat(".10_1e2"), .10);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dds-ep.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dds-ep.js
new file mode 100644
index 0000000000..85b02ae9e4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-dot-dds-nsl-dds-ep.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - . StrDecimalDigits StrExponentPart
+info: |
+  StrUnsignedDecimalLiteral :::
+    . StrDecimalDigits StrExponentPart
+
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat(".00_01e2"), .00);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd-one-of.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd-one-of.js
new file mode 100644
index 0000000000..0fe03d911a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd-one-of.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - NonZeroDigit NumericLiteralSeparator DecimalDigit
+info: |
+  StrUnsignedDecimalLiteral :::
+    StrUnsignedDecimalLiteral
+
+  NonZeroDigit ::: one of
+    1 2 3 4 5 6 7 8 9
+
+  StrDecimalDigits :::
+    DecimalDigit
+    ...
+
+  DecimalDigit ::: one of
+    0 1 2 3 4 5 6 7 8 9
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1_0"), 1);
+assert.sameValue(parseFloat("1_1"), 1);
+assert.sameValue(parseFloat("2_2"), 2);
+assert.sameValue(parseFloat("3_3"), 3);
+assert.sameValue(parseFloat("4_4"), 4);
+assert.sameValue(parseFloat("5_5"), 5);
+assert.sameValue(parseFloat("6_6"), 6);
+assert.sameValue(parseFloat("7_7"), 7);
+assert.sameValue(parseFloat("8_8"), 8);
+assert.sameValue(parseFloat("9_9"), 9);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd.js
new file mode 100644
index 0000000000..45cf8d521e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dd.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - StrDecimalDigits
+info: |
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+    ...
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1_1"), 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dds.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dds.js
new file mode 100644
index 0000000000..c286b2d2f5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-nzd-nsl-dds.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat - DecimalDigit
+info: |
+  StrDecimalDigits :::
+    DecimalDigit
+    StrDecimalDigits DecimalDigit
+
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("1_0123456789"), 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-sign-plus-dds-nsl-dd.js b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-sign-plus-dds-nsl-dd.js
new file mode 100644
index 0000000000..fd2bfe4b2d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/parseFloat/tonumber-numeric-separator-literal-sign-plus-dds-nsl-dd.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  The NSL does not affect strings parsed by parseFloat (StrUnsignedDecimalLiteral)
+info: |
+  StrDecimalLiteral :::
+    StrUnsignedDecimalLiteral
+    + StrUnsignedDecimalLiteral
+    - StrUnsignedDecimalLiteral
+features: [numeric-separator-literal]
+---*/
+
+assert.sameValue(parseFloat("+123456789_0"), +123456789);
+assert.sameValue(parseFloat("+123456789_1"), +123456789);
+assert.sameValue(parseFloat("+123456789_2"), +123456789);
+assert.sameValue(parseFloat("+123456789_3"), +123456789);
+assert.sameValue(parseFloat("+123456789_4"), +123456789);
+assert.sameValue(parseFloat("+123456789_5"), +123456789);
+assert.sameValue(parseFloat("+123456789_6"), +123456789);
+assert.sameValue(parseFloat("+123456789_7"), +123456789);
+assert.sameValue(parseFloat("+123456789_8"), +123456789);
+assert.sameValue(parseFloat("+123456789_9"), +123456789);
+
+reportCompare(0, 0);