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