| 1 |
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| 2 |
* |
| 3 |
* ***** BEGIN LICENSE BLOCK ***** |
| 4 |
* Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| 5 |
* |
| 6 |
* The contents of this file are subject to the Mozilla Public License Version |
| 7 |
* 1.1 (the "License"); you may not use this file except in compliance with |
| 8 |
* the License. You may obtain a copy of the License at |
| 9 |
* http://www.mozilla.org/MPL/ |
| 10 |
* |
| 11 |
* Software distributed under the License is distributed on an "AS IS" basis, |
| 12 |
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| 13 |
* for the specific language governing rights and limitations under the |
| 14 |
* License. |
| 15 |
* |
| 16 |
* The Original Code is Mozilla Communicator client code, released |
| 17 |
* March 31, 1998. |
| 18 |
* |
| 19 |
* The Initial Developer of the Original Code is |
| 20 |
* Netscape Communications Corporation. |
| 21 |
* Portions created by the Initial Developer are Copyright (C) 1998 |
| 22 |
* the Initial Developer. All Rights Reserved. |
| 23 |
* |
| 24 |
* Contributor(s): |
| 25 |
* IBM Corp. |
| 26 |
* |
| 27 |
* Alternatively, the contents of this file may be used under the terms of |
| 28 |
* either of the GNU General Public License Version 2 or later (the "GPL"), |
| 29 |
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| 30 |
* in which case the provisions of the GPL or the LGPL are applicable instead |
| 31 |
* of those above. If you wish to allow use of your version of this file only |
| 32 |
* under the terms of either the GPL or the LGPL, and not to allow others to |
| 33 |
* use your version of this file under the terms of the MPL, indicate your |
| 34 |
* decision by deleting the provisions above and replace them with the notice |
| 35 |
* and other provisions required by the GPL or the LGPL. If you do not delete |
| 36 |
* the provisions above, a recipient may use your version of this file under |
| 37 |
* the terms of any one of the MPL, the GPL or the LGPL. |
| 38 |
* |
| 39 |
* ***** END LICENSE BLOCK ***** */ |
| 40 |
|
| 41 |
#ifndef _LIBMATH_H |
| 42 |
#define _LIBMATH_H |
| 43 |
|
| 44 |
#include <math.h> |
| 45 |
#include "jsversion.h" |
| 46 |
|
| 47 |
/* |
| 48 |
* Use system provided math routines. |
| 49 |
*/ |
| 50 |
|
| 51 |
/* The right copysign function is not always named the same thing. */ |
| 52 |
#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
| 53 |
#define js_copysign __builtin_copysign |
| 54 |
#elif defined WINCE |
| 55 |
#define js_copysign _copysign |
| 56 |
#elif defined _WIN32 |
| 57 |
#if _MSC_VER < 1400 |
| 58 |
/* Try to work around apparent _copysign bustage in VC6 and VC7. */ |
| 59 |
#define js_copysign js_copysign |
| 60 |
extern double js_copysign(double, double); |
| 61 |
#else |
| 62 |
#define js_copysign _copysign |
| 63 |
#endif |
| 64 |
#else |
| 65 |
#define js_copysign copysign |
| 66 |
#endif |
| 67 |
|
| 68 |
/* Consistency wrapper for platform deviations in fmod() */ |
| 69 |
static inline double |
| 70 |
js_fmod(double d, double d2) |
| 71 |
{ |
| 72 |
#ifdef XP_WIN |
| 73 |
/* |
| 74 |
* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. |
| 75 |
* Workaround MS fmod bug where -0 % -N => 0, not -0. |
| 76 |
*/ |
| 77 |
if ((JSDOUBLE_IS_FINITE(d) && JSDOUBLE_IS_INFINITE(d2)) || |
| 78 |
(d == 0 && JSDOUBLE_IS_FINITE(d2))) { |
| 79 |
return d; |
| 80 |
} |
| 81 |
#endif |
| 82 |
return fmod(d, d2); |
| 83 |
} |
| 84 |
|
| 85 |
#endif /* _LIBMATH_H */ |
| 86 |
|
Parent Directory
| 
Revision Log