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36 lines
940 B
JavaScript
36 lines
940 B
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: >
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If y is -Infinity and x is finite, Math.atan2(y,x) is an
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implementation-dependent approximation to -PI/2
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es5id: 15.8.2.5_A19
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description: >
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Checking if Math.atan2(y,x) is an approximation to -PI/2, where y
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is -Infinity and x is finite
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includes:
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- $FAIL.js
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- math_precision.js
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- math_isequal.js
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---*/
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// CHECK#1
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//prec = 0.00000000000001;
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var y = -Infinity;
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var x = new Array();
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x[0] = 0.000000000000001;
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x[1] = 1;
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x[2] = 1.7976931348623157E308; //largest finite number
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x[3] = -0.000000000000001;
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x[4] = -1;
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x[5] = -1.7976931348623157E308; //largest (by module) finite number
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var xnum = 6;
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for (var i = 0; i < xnum; i++)
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{
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if (!isEqual(Math.atan2(y,x[i]), -(Math.PI)/2))
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$FAIL("#1: Math.abs(Math.atan2(" + y + ", " + x[i] + ") + (Math.PI/2)) >= " + prec);
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}
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