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29 lines
732 B
JavaScript
29 lines
732 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 x is -0, Math.atan2(y,x) is an implementation-dependent approximation to -PI/2
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*
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* @path ch15/15.8/15.8.2/15.8.2.5/S15.8.2.5_A13.js
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* @description Checking if Math.atan2(y,-0) is an approximation to -PI/2, where y<0
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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 = -0;
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//prec = 0.00000000000001;
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y = new Array();
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y[0] = -0.000000000000001;
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y[2] = -Infinity;
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y[1] = -1;
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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)/2))
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$FAIL("#1: Math.abs(Math.atan2(" + y[i] + ", -0) + ((Math.PI)/2)) >= " + prec);
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}
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