annotate src/sysfloat.h @ 771:943eaba38521

[xemacs-hg @ 2002-03-13 08:51:24 by ben] The big ben-mule-21-5 check-in! Various files were added and deleted. See CHANGES-ben-mule. There are still some test suite failures. No crashes, though. Many of the failures have to do with problems in the test suite itself rather than in the actual code. I'll be addressing these in the next day or so -- none of the test suite failures are at all critical. Meanwhile I'll be trying to address the biggest issues -- i.e. build or run failures, which will almost certainly happen on various platforms. All comments should be sent to ben@xemacs.org -- use a Cc: if necessary when sending to mailing lists. There will be pre- and post- tags, something like pre-ben-mule-21-5-merge-in, and post-ben-mule-21-5-merge-in.
author ben
date Wed, 13 Mar 2002 08:54:06 +0000
parents abe6d1db359e
children 308d34e9f07d
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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 #ifndef INCLUDED_sysfloat_h_
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24 #define INCLUDED_sysfloat_h_
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25
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26 #if defined(LINUX) && !(defined (__GLIBC__) && (__GLIBC__ >= 2))
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27 /* These are redefined (correctly, but differently) in values.h. */
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28 #undef INTBITS
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29 #undef LONGBITS
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30 #undef SHORTBITS
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31 #endif
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32
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33 #include <math.h>
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34
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35 #ifdef WIN32_NATIVE
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36 /* A quirky way to obtain logb prototype */
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37 #include <float.h>
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38 #define logb _logb
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39 #endif
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40
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41 #ifdef HAVE_MATHERR
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42 /* Work around symbol conflict on Linux/glibc */
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43 #ifndef DOMAIN
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44 /* SysV matherr is not defined if _BSD_SOURCE is used, and on Linux X11 */
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45 /* is compiled with _BSD_SOURCE which can also change the size of other */
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46 /* types. The configure test for matherr is broken. */
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47 /* Bah. Good riddance to bad rubbish. */
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48 #undef HAVE_MATHERR
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49 #endif
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50 #endif
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51
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52 #ifdef NO_MATHERR
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53 #undef HAVE_MATHERR
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54 #endif
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55
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56 #ifdef HAVE_MATHERR
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57 # ifdef FLOAT_CHECK_ERRNO
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58 # undef FLOAT_CHECK_ERRNO
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59 # endif
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60 # ifdef FLOAT_CHECK_DOMAIN
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61 # undef FLOAT_CHECK_DOMAIN
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62 # endif
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63 #endif
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64
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65 #ifndef NO_FLOAT_CHECK_ERRNO
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66 #define FLOAT_CHECK_ERRNO
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67 #endif
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68
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69 #ifdef FLOAT_CHECK_ERRNO
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70 # include <errno.h>
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71 #endif
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72
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73 #ifndef isnan
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74 # define isnan(x) ((x) != (x))
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75 #endif
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76
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77 #endif /* INCLUDED_sysfloat_h_ */