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+/* The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Mozilla Communicator client code, released March
+ * 31, 1998.
+ *
+ * The Initial Developer of the Original Code is Netscape Communications
+ * Corporation. Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ */
+ /**
+ File Name: 15.8.2.4.js
+ ECMA Section: 15.8.2.4 atan( x )
+ Description: return an approximation to the arc tangent of the
+ argument. the result is expressed in radians and
+ range is from -PI/2 to +PI/2. special cases:
+ - if x is NaN, the result is NaN
+ - if x == +0, the result is +0
+ - if x == -0, the result is -0
+ - if x == +Infinity, the result is approximately +PI/2
+ - if x == -Infinity, the result is approximately -PI/2
+ Author: christine@netscape.com
+ Date: 7 july 1997
+
+*/
+
+ var SECTION = "15.8.2.4";
+ var VERSION = "ECMA_1";
+ startTest();
+ var TITLE = "Math.atan()";
+ var BUGNUMBER="77391";
+
+ writeHeaderToLog( SECTION + " "+ TITLE);
+
+ var testcases = getTestCases();
+ test();
+
+function getTestCases() {
+ var array = new Array();
+ var item = 0;
+
+ array[item++] = new TestCase( SECTION, "Math.atan.length", 1, Math.atan.length );
+
+ array[item++] = new TestCase( SECTION, "Math.atan()", Number.NaN, Math.atan() );
+ array[item++] = new TestCase( SECTION, "Math.atan(void 0)", Number.NaN, Math.atan(void 0) );
+ array[item++] = new TestCase( SECTION, "Math.atan(null)", 0, Math.atan(null) );
+ array[item++] = new TestCase( SECTION, "Math.atan(NaN)", Number.NaN, Math.atan(Number.NaN) );
+
+ array[item++] = new TestCase( SECTION, "Math.atan('a string')", Number.NaN, Math.atan("a string") );
+ array[item++] = new TestCase( SECTION, "Math.atan('0')", 0, Math.atan('0') );
+ array[item++] = new TestCase( SECTION, "Math.atan('1')", Math.PI/4, Math.atan('1') );
+ array[item++] = new TestCase( SECTION, "Math.atan('-1')", -Math.PI/4, Math.atan('-1') );
+ array[item++] = new TestCase( SECTION, "Math.atan('Infinity)", Math.PI/2, Math.atan('Infinity') );
+ array[item++] = new TestCase( SECTION, "Math.atan('-Infinity)", -Math.PI/2, Math.atan('-Infinity') );
+
+ array[item++] = new TestCase( SECTION, "Math.atan(0)", 0, Math.atan(0) );
+ array[item++] = new TestCase( SECTION, "Math.atan(-0)", -0, Math.atan(-0) );
+ array[item++] = new TestCase( SECTION, "Infinity/Math.atan(-0)", -Infinity, Infinity/Math.atan(-0) );
+ array[item++] = new TestCase( SECTION, "Math.atan(Infinity)", Math.PI/2, Math.atan(Number.POSITIVE_INFINITY) );
+ array[item++] = new TestCase( SECTION, "Math.atan(-Infinity)", -Math.PI/2, Math.atan(Number.NEGATIVE_INFINITY) );
+ array[item++] = new TestCase( SECTION, "Math.atan(1)", Math.PI/4, Math.atan(1) );
+ array[item++] = new TestCase( SECTION, "Math.atan(-1)", -Math.PI/4, Math.atan(-1) );
+ return array;
+}
+function test() {
+ for ( tc=0; tc < testcases.length; tc++ ) {
+ testcases[tc].passed = writeTestCaseResult(
+ testcases[tc].expect,
+ testcases[tc].actual,
+ testcases[tc].description +" = "+
+ testcases[tc].actual );
+
+ testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
+ }
+ stopTest();
+ return ( testcases );
+} \ No newline at end of file