/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
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 TITLE =
"Math.atan()" ;
var BUGNUMBER=
"77391" ;
printBugNumber(BUGNUMBER);
writeHeaderToLog( SECTION +
" " + TITLE);
new TestCase(
"Math.atan.length" ,
1 ,
Math.atan.length );
new TestCase(
"Math.atan()" ,
Number.NaN,
Math.atan() );
new TestCase(
"Math.atan(void 0)" ,
Number.NaN,
Math.atan(
void 0 ) );
new TestCase(
"Math.atan(null)" ,
0 ,
Math.atan(
null ) );
new TestCase(
"Math.atan(NaN)" ,
Number.NaN,
Math.atan(Number.NaN) );
new TestCase(
"Math.atan('a string')" ,
Number.NaN,
Math.atan(
"a string" ) );
new TestCase(
"Math.atan('0')" ,
0 ,
Math.atan(
'0' ) );
new TestCase(
"Math.atan('1')" ,
Math.PI/
4 ,
Math.atan(
'1' ) );
new TestCase(
"Math.atan('-1')" ,
-Math.PI/
4 ,
Math.atan(
'-1' ) );
new TestCase(
"Math.atan('Infinity)" ,
Math.PI/
2 ,
Math.atan(
'Infinity' ) );
new TestCase(
"Math.atan('-Infinity)" ,
-Math.PI/
2 ,
Math.atan(
'-Infinity' ) );
new TestCase(
"Math.atan(0)" ,
0 ,
Math.atan(
0 ) );
new TestCase(
"Math.atan(-0)" ,
-
0 ,
Math.atan(-
0 ) );
new TestCase(
"Infinity/Math.atan(-0)" ,
-Infinity,
Infinity/Math.atan(-
0 ) );
new TestCase(
"Math.atan(Infinity)" ,
Math.PI/
2 ,
Math.atan(Number.POSITIVE_INFINITY) );
new TestCase(
"Math.atan(-Infinity)" ,
-Math.PI/
2 ,
Math.atan(Number.NEGATIVE_INFINITY) );
new TestCase(
"Math.atan(1)" ,
Math.PI/
4 ,
Math.atan(
1 ) );
new TestCase(
"Math.atan(-1)" ,
-Math.PI/
4 ,
Math.atan(-
1 ) );
test();
Messung V0.5 in Prozent C=76 H=91 G=83
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-06-10)
¤
*© Formatika GbR, Deutschland