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// Copyright 2009 the Sputnik authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/**
* @name: S15.8.2.5_A19;
* @section: 15.8.2.5;
* @assertion: If y is -Infinity and x is finite, Math.atan2(y,x) is an implementation-dependent approximation to -PI/2;
* @description: Checking if Math.atan2(y,x) is an approximation to -PI/2, where y is -Infinity and x is finite;
*/
// Converted for Test262 from original Sputnik source
ES5Harness.registerTest( {
id: "S15.8.2.5_A19",
path: "TestCases/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_A19.js",
assertion: "If y is -Infinity and x is finite, Math.atan2(y,x) is an implementation-dependent approximation to -PI/2",
description: "Checking if Math.atan2(y,x) is an approximation to -PI/2, where y is -Infinity and x is finite",
test: function testcase() {
$INCLUDE("math_precision.js");
$INCLUDE("math_isequal.js");
// CHECK#1
//prec = 0.00000000000001;
y = -Infinity;
x = new Array();
x[0] = 0.000000000000001;
x[1] = 1;
x[2] = 1.7976931348623157E308; //largest finite number
x[3] = -0.000000000000001;
x[4] = -1;
x[5] = -1.7976931348623157E308; //largest (by module) finite number
xnum = 6;
for (i = 0; i < xnum; i++)
{
if (!isEqual(Math.atan2(y,x[i]), -(Math.PI)/2))
$FAIL("#1: Math.abs(Math.atan2(" + y + ", " + x[i] + ") + (Math.PI/2)) >= " + prec);
}
}
});
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