diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Math/round/S15.8.2.15_A7.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Math/round/S15.8.2.15_A7.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Math/round/S15.8.2.15_A7.js b/js/src/tests/test262/built-ins/Math/round/S15.8.2.15_A7.js new file mode 100644 index 0000000000..d7a3e6e63f --- /dev/null +++ b/js/src/tests/test262/built-ins/Math/round/S15.8.2.15_A7.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: | + If x is less than or equal to -0 and x is greater than or equal to -0.5, + Math.round(x) is equal to -0 +es5id: 15.8.2.15_A7 +description: > + `Math.round(x)` differs from `Math.floor(x + 0.5)`: + + 1) for values in [-0.5; -0] + 2) for 0.5 - Number.EPSILON / 4 + 3) for odd integers in [-(2 / Number.EPSILON - 1); -(1 / Number.EPSILON + 1)] or in [1 / Number.EPSILON + 1; 2 / Number.EPSILON - 1] +---*/ +assert.sameValue( + 1 / Math.round(-0.5), + 1 / -0, + 'The result of evaluating (1 / Math.round(-0.5)) is expected to be 1 / -0' +); + +assert.sameValue( + 1 / Math.round(-0.25), + 1 / -0, + 'The result of evaluating (1 / Math.round(-0.25)) is expected to be 1 / -0' +); + +assert.sameValue(1 / Math.round(-0), 1 / -0, 'The result of evaluating (1 / Math.round(-0)) is expected to be 1 / -0'); + +var x = 0; + +// CHECK#4 +x = 0.5 - Number.EPSILON / 4; +assert.sameValue(1 / Math.round(x), 1 / 0, 'The result of evaluating (1 / Math.round(x)) is expected to be 1 / 0'); + +// CHECK#5 +x = -(2 / Number.EPSILON - 1); +assert.sameValue(Math.round(x), x, 'Math.round(-(2 / Number.EPSILON - 1)) returns x'); + +// CHECK#6 +x = -(1.5 / Number.EPSILON - 1); +assert.sameValue(Math.round(x), x, 'Math.round(-(1.5 / Number.EPSILON - 1)) returns x'); + +// CHECK#7 +x = -(1 / Number.EPSILON + 1); +assert.sameValue(Math.round(x), x, 'Math.round(-(1 / Number.EPSILON + 1)) returns x'); + +// CHECK#8 +x = 1 / Number.EPSILON + 1; +assert.sameValue(Math.round(x), x, 'Math.round(1 / Number.EPSILON + 1) returns x'); + +// CHECK#9 +x = 1.5 / Number.EPSILON - 1; +assert.sameValue(Math.round(x), x, 'Math.round(1.5 / Number.EPSILON - 1) returns x'); + +// CHECK#10 +x = 2 / Number.EPSILON - 1; +assert.sameValue(Math.round(x), x, 'Math.round(2 / Number.EPSILON - 1) returns x'); + +reportCompare(0, 0); |