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/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
File Name: 15.8.2.2.js
ECMA Section: 15.8.2.2 acos( x )
Description: return an approximation to the arc cosine of the
argument. the result is expressed in radians and
range is from +0 to +PI. special cases:
- if x is NaN, return NaN
- if x > 1, the result is NaN
- if x < -1, the result is NaN
- if x == 1, the result is +0
Author: christine@netscape.com
Date: 7 july 1997
*/
var SECTION = "15.8.2.2";
var TITLE = "Math.acos()";
writeHeaderToLog( SECTION + " "+ TITLE);
new TestCase(
"Math.acos.length",
1,
Math.acos.length );
new TestCase(
"Math.acos(void 0)",
Number.NaN,
Math.acos(void 0) );
new TestCase(
"Math.acos()",
Number.NaN,
Math.acos() );
new TestCase(
"Math.acos(null)",
Math.PI/2,
Math.acos(null) );
new TestCase(
"Math.acos(NaN)",
Number.NaN,
Math.acos(Number.NaN) );
new TestCase(
"Math.acos(a string)",
Number.NaN,
Math.acos("a string") );
new TestCase(
"Math.acos('0')",
Math.PI/2,
Math.acos('0') );
new TestCase(
"Math.acos('1')",
0,
Math.acos('1') );
new TestCase(
"Math.acos('-1')",
Math.PI,
Math.acos('-1') );
new TestCase(
"Math.acos(1.00000001)",
Number.NaN,
Math.acos(1.00000001) );
new TestCase(
"Math.acos(11.00000001)",
Number.NaN,
Math.acos(-1.00000001) );
new TestCase(
"Math.acos(1)",
0,
Math.acos(1) );
new TestCase(
"Math.acos(-1)",
Math.PI,
Math.acos(-1) );
new TestCase(
"Math.acos(0)",
Math.PI/2,
Math.acos(0) );
new TestCase(
"Math.acos(-0)",
Math.PI/2,
Math.acos(-0) );
new TestCase(
"Math.acos(Math.SQRT1_2)",
Math.PI/4,
Math.acos(Math.SQRT1_2));
new TestCase(
"Math.acos(-Math.SQRT1_2)",
Math.PI/4*3,
Math.acos(-Math.SQRT1_2));
new TestCase(
"Math.acos(0.9999619230642)",
Math.PI/360,
Math.acos(0.9999619230642));
new TestCase(
"Math.acos(-3.0)",
Number.NaN,
Math.acos(-3.0));
test();
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