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28 lines
830 B
JavaScript
28 lines
830 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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* If y<0 and y is finite and x is equal to -Infinity, Math.atan2(y,x) is an implementation-dependent approximation to -PI
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*
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* @path ch15/15.8/15.8.2/15.8.2.5/S15.8.2.5_A17.js
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* @description Checking if Math.atan2(y,x) is an approximation to -PI, where y<0 and y is finite and x is equal to -Infinity
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*/
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$INCLUDE("math_precision.js");
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$INCLUDE("math_isequal.js");
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// CHECK#1
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x = -Infinity;
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y = new Array();
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y[0] = -0.000000000000001;
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y[1] = -1;
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y[2] = -1.7976931348623157E308; //largest (by module) finite number
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ynum = 3;
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for (i = 0; i < ynum; i++)
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{
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if (!isEqual(Math.atan2(y[i],x), -Math.PI))
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$FAIL("#1: Math.abs(Math.atan2(" + y[i] + ", " + x + ") + Math.PI) >= " + prec);
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}
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