This commit was manufactured by cvs2svn to create branch 'chise-r21-4-19'.

[chise/xemacs-chise.git-] / src / sysfloat.h

diff --git a/src/sysfloat.h b/src/sysfloat.h
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+/*
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not really in FSF. */
+
+#ifndef INCLUDED_sysfloat_h_
+#define INCLUDED_sysfloat_h_
+
+/* Work around a problem that happens because math.h on hpux 7
+   defines two static variables--which, in Emacs, are not really static,
+   because `static' is defined as nothing.  The problem is that they are
+   defined both in data.c and in floatfns.c.
+   These macros prevent the name conflict.
+
+   (Is it still necessary to define static to nothing on hpux7?
+   Removing that would be the best fix. -jwz)
+  */
+# if defined (HPUX) && !defined (HPUX8)
+#  define _MAXLDBL THIS_FILENAME ## _maxldbl
+#  define _NMAXLDBL THIS_FILENAME ## _nmaxldbl
+# endif
+
+#if defined(LINUX) && !(defined (__GLIBC__) && (__GLIBC__ >= 2))
+/* These are redefined (correctly, but differently) in values.h.  */
+#undef INTBITS
+#undef LONGBITS
+#undef SHORTBITS
+#endif
+
+#include <math.h>
+
+#ifdef WIN32_NATIVE
+/* A quirky way to obtain logb prototype */
+#include <float.h>
+#define logb _logb
+#endif
+
+#ifdef HAVE_MATHERR
+/* Work around symbol conflict on Linux/glibc */
+#ifndef DOMAIN
+/* SysV matherr is not defined if _BSD_SOURCE is used, and on Linux X11 */
+/* is compiled with _BSD_SOURCE which can also change the size of other */
+/* types.  The configure test for matherr is broken. */
+/* Bah.  Good riddance to bad rubbish. */
+#undef HAVE_MATHERR
+#endif
+#endif
+
+#ifdef NO_MATHERR
+#undef HAVE_MATHERR
+#endif
+
+#ifdef HAVE_MATHERR
+# ifdef FLOAT_CHECK_ERRNO
+#  undef FLOAT_CHECK_ERRNO
+# endif
+# ifdef FLOAT_CHECK_DOMAIN
+#  undef FLOAT_CHECK_DOMAIN
+# endif
+#endif
+
+#ifndef NO_FLOAT_CHECK_ERRNO
+#define FLOAT_CHECK_ERRNO
+#endif
+
+#ifdef FLOAT_CHECK_ERRNO
+# include <errno.h>
+#endif
+
+#ifndef isnan
+# define isnan(x) ((x) != (x))
+#endif
+
+#endif /* INCLUDED_sysfloat_h_ */