test262/test/suite/ch15/15.8/15.8.2/15.8.2.5/S15.8.2.5_A15.js

28 lines
879 B
JavaScript

// Copyright 2009 the Sputnik authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/**
* If y>0 and y is finite and x is equal to -Infinity, Math.atan2(y,x) is an implementation-dependent approximation to +PI
*
* @path 15_Native/15.8_The_Math_Object/15.8.2_Function_Properties_of_the_Math_Object/15.8.2.5_atan2/S15.8.2.5_A15.js
* @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
*/
$INCLUDE("math_precision.js");
$INCLUDE("math_isequal.js");
// CHECK#1
x = -Infinity;
y = new Array();
y[0] = 0.000000000000001;
y[1] = 1;
y[2] = 1.7976931348623157E308; //largest finite number
ynum = 3;
for (i = 0; i < ynum; i++)
{
if (!isEqual(Math.atan2(y[i],x),Math.PI))
$FAIL("#1: Math.abs(Math.atan2(" + y[i] + ", " + x + ") - Math.PI) >= " + prec);
}