michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: /**
michael@0:    File Name:          15.8.2.15.js
michael@0:    ECMA Section:       15.8.2.15  Math.round(x)
michael@0:    Description:        return the greatest number value that is closest to the
michael@0:    argument and is an integer.  if two integers are equally
michael@0:    close to the argument. then the result is the number value
michael@0:    that is closer to Infinity.  if the argument is an integer,
michael@0:    return the argument.
michael@0:    special cases:
michael@0:    - if x is NaN       return NaN
michael@0:    - if x = +0         return +0
michael@0:    - if x = -0          return -0
michael@0:    - if x = Infinity   return Infinity
michael@0:    - if x = -Infinity  return -Infinity
michael@0:    - if 0 < x < 0.5    return 0
michael@0:    - if -0.5 <= x < 0  return -0
michael@0:    example:
michael@0:    Math.round( 3.5 ) == 4
michael@0:    Math.round( -3.5 ) == 3
michael@0:    also:
michael@0:    - Math.round(x) == Math.floor( x + 0.5 )
michael@0:    except if x = -0.  in that case, Math.round(x) = -0
michael@0: 
michael@0:    and Math.floor( x+0.5 ) = +0
michael@0: 
michael@0: 
michael@0:    Author:             christine@netscape.com
michael@0:    Date:               7 july 1997
michael@0: */
michael@0: 
michael@0: var SECTION = "15.8.2.15";
michael@0: var VERSION = "ECMA_1";
michael@0: var TITLE   = "Math.round(x)";
michael@0: var BUGNUMBER="331411";
michael@0: 
michael@0: var EXCLUDE = "true";
michael@0: 
michael@0: startTest();
michael@0: 
michael@0: writeHeaderToLog( SECTION + " "+ TITLE);
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round.length",
michael@0: 	      1,
michael@0: 	      Math.round.length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round()",
michael@0: 	      Number.NaN,
michael@0: 	      Math.round() );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(null)",
michael@0: 	      0,
michael@0: 	      Math.round(0) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(void 0)",
michael@0: 	      Number.NaN,
michael@0: 	      Math.round(void 0) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(true)",
michael@0: 	      1,
michael@0: 	      Math.round(true) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(false)",
michael@0: 	      0,
michael@0: 	      Math.round(false) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round('.99999')",
michael@0: 	      1,
michael@0: 	      Math.round('.99999') );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round('12345e-2')",
michael@0: 	      123,
michael@0: 	      Math.round('12345e-2') );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(NaN)",
michael@0: 	      Number.NaN,
michael@0: 	      Math.round(Number.NaN) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(0)",
michael@0: 	      0,
michael@0: 	      Math.round(0) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-0)",
michael@0: 	      -0,
michael@0: 	      Math.round(-0));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Infinity/Math.round(-0)",
michael@0: 	      -Infinity,
michael@0: 	      Infinity/Math.round(-0) );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(Infinity)",
michael@0: 	      Number.POSITIVE_INFINITY,
michael@0: 	      Math.round(Number.POSITIVE_INFINITY));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-Infinity)",
michael@0: 	      Number.NEGATIVE_INFINITY,
michael@0: 	      Math.round(Number.NEGATIVE_INFINITY));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(0.49)",
michael@0: 	      0,
michael@0: 	      Math.round(0.49));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(0.5)",
michael@0: 	      1,
michael@0: 	      Math.round(0.5));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(0.51)",
michael@0: 	      1,
michael@0: 	      Math.round(0.51));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-0.49)",
michael@0: 	      -0,
michael@0: 	      Math.round(-0.49));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-0.5)",
michael@0: 	      -0,
michael@0: 	      Math.round(-0.5));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Infinity/Math.round(-0.49)",
michael@0: 	      -Infinity,
michael@0: 	      Infinity/Math.round(-0.49));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Infinity/Math.round(-0.5)",
michael@0: 	      -Infinity,
michael@0: 	      Infinity/Math.round(-0.5));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-0.51)",
michael@0: 	      -1,
michael@0: 	      Math.round(-0.51));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(3.5)",
michael@0: 	      4,
michael@0: 	      Math.round(3.5));
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "Math.round(-3.5)",
michael@0: 	      -3,
michael@0: 	      Math.round(-3));
michael@0: 
michael@0: test();