Mercurial > hg > xemacs-beta
comparison src/sysfloat.h @ 428:3ecd8885ac67 r21-2-22
Import from CVS: tag r21-2-22
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 11:28:15 +0200 |
| parents | |
| children | 8de8e3f6228a |
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| 427:0a0253eac470 | 428:3ecd8885ac67 |
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| 1 /* | |
| 2 Copyright (C) 1995 Free Software Foundation, Inc. | |
| 3 | |
| 4 This file is part of XEmacs. | |
| 5 | |
| 6 XEmacs is free software; you can redistribute it and/or modify it | |
| 7 under the terms of the GNU General Public License as published by the | |
| 8 Free Software Foundation; either version 2, or (at your option) any | |
| 9 later version. | |
| 10 | |
| 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with XEmacs; see the file COPYING. If not, write to | |
| 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 19 Boston, MA 02111-1307, USA. */ | |
| 20 | |
| 21 /* Synched up with: Not really in FSF. */ | |
| 22 | |
| 23 /* Work around a problem that happens because math.h on hpux 7 | |
| 24 defines two static variables--which, in Emacs, are not really static, | |
| 25 because `static' is defined as nothing. The problem is that they are | |
| 26 defined both in data.c and in floatfns.c. | |
| 27 These macros prevent the name conflict. | |
| 28 | |
| 29 (Is it still necessary to define static to nothing on hpux7? | |
| 30 Removing that would be the best fix. -jwz) | |
| 31 */ | |
| 32 # if defined (HPUX) && !defined (HPUX8) | |
| 33 # define _MAXLDBL THIS_FILENAME ## _maxldbl | |
| 34 # define _NMAXLDBL THIS_FILENAME ## _nmaxldbl | |
| 35 # endif | |
| 36 | |
| 37 #if defined(MSDOS) || (defined(LINUX) && \ | |
| 38 !(defined (__GLIBC__) && (__GLIBC__ >= 2))) | |
| 39 /* These are redefined (correctly, but differently) in values.h. */ | |
| 40 #undef INTBITS | |
| 41 #undef LONGBITS | |
| 42 #undef SHORTBITS | |
| 43 #endif | |
| 44 | |
| 45 #include <math.h> | |
| 46 | |
| 47 #ifdef WINDOWSNT | |
| 48 /* A quirky way to obtain logb prototype */ | |
| 49 #include <float.h> | |
| 50 #define logb _logb | |
| 51 #endif | |
| 52 | |
| 53 #ifdef HAVE_MATHERR | |
| 54 /* Work around symbol conflict on Linux/glibc */ | |
| 55 #ifndef DOMAIN | |
| 56 /* SysV matherr is not defined if _BSD_SOURCE is used, and on Linux X11 */ | |
| 57 /* is compiled with _BSD_SOURCE which can also change the size of other */ | |
| 58 /* types. The configure test for matherr is broken. */ | |
| 59 /* Bah. Good riddance to bad rubbish. */ | |
| 60 #undef HAVE_MATHERR | |
| 61 #endif | |
| 62 #endif | |
| 63 | |
| 64 #ifdef NO_MATHERR | |
| 65 #undef HAVE_MATHERR | |
| 66 #endif | |
| 67 | |
| 68 #ifdef HAVE_MATHERR | |
| 69 # ifdef FLOAT_CHECK_ERRNO | |
| 70 # undef FLOAT_CHECK_ERRNO | |
| 71 # endif | |
| 72 # ifdef FLOAT_CHECK_DOMAIN | |
| 73 # undef FLOAT_CHECK_DOMAIN | |
| 74 # endif | |
| 75 #endif | |
| 76 | |
| 77 #ifndef NO_FLOAT_CHECK_ERRNO | |
| 78 #define FLOAT_CHECK_ERRNO | |
| 79 #endif | |
| 80 | |
| 81 #ifdef FLOAT_CHECK_ERRNO | |
| 82 # include <errno.h> | |
| 83 #endif | |
| 84 | |
| 85 #ifndef isnan | |
| 86 # define isnan(x) ((x) != (x)) | |
| 87 #endif | |
| 88 |