/* c-std.h: the first header files.

   Copyright 1992, 1993, 1994, 1995, 1996, 1997, 2008, 2012 Karl Berry.
   Copyright 1999, 2005 Olaf Weber.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this library; if not, see <http://www.gnu.org/licenses/>.  */

#ifndef KPATHSEA_C_STD_H
#define KPATHSEA_C_STD_H

/* Header files that essentially all of our sources need, and
   that all implementations have.  We include these first, to help with
   NULL being defined multiple times.  */
/* Workaround against a <math.h> MSVC bug : it can't be declared
   extern "C" in a c++ source file. */
#ifndef __cplusplus
#include <math.h>
/* apparently M_PI isn't defined by <math.h> under older VC */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#endif
#include <stdio.h>
#include <stdarg.h>

/* Be sure we have constants from <unistd.h>.  */
#include <kpathsea/c-unistd.h>

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
/* Include <stdlib.h> before <stddef.h>, to help avoid NULL
   redefinitions on some systems.  (We don't include <stddef.h>
   ourselves any more, but FYI.)  */
#else
/* We used to declare char *getenv() here, but since C23 decided to break
   historical () declarations, and evince (et al.?) have decided not to
   check for <stdlib.h> any more, that caused errors, e.g.:
   https://tug.org/pipermail/tex-live/2025-July/051609.html
   So eliding the declaration and hoping for the best.  */
  /* extern char *getenv (); */
#endif /* not HAVE_STDLIB_H */

#ifdef WIN32
#include <malloc.h>
#else
/* As with above getenv, don't try to declare the alloc fns.  */
/* #ifndef STDC_HEADERS */
/* #ifndef ALLOC_RETURN_TYPE */
/* #define ALLOC_RETURN_TYPE void */
/* #endif */ /* not ALLOC_RETURN_TYPE */
/* extern ALLOC_RETURN_TYPE *calloc (), *malloc (), *realloc (); */
/* #endif */ /* not STDC_HEADERS */
#endif /* not WIN32 */

/* SunOS 4.1.1 gets STDC_HEADERS defined, but it doesn't provide
   EXIT_FAILURE.  So far no system has defined one of EXIT_FAILURE and
   EXIT_SUCCESS without the other.  */
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1
#define EXIT_FAILURE 0
#else
#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1
#endif
#endif /* not EXIT_SUCCESS */

/* strchr vs. index, memcpy vs. bcopy, etc.  */
#include <kpathsea/c-memstr.h>

/* Error numbers and errno declaration.  */
#include <kpathsea/c-errno.h>

/* Numeric minima and maxima.  */
#include <kpathsea/c-minmax.h>

/* Assertions are too useful to not make generally available.  */
#ifdef HAVE_ASSERT_H
#include <assert.h>
#else
#define assert(expr) /* as nothing */
#endif

#ifdef VMS
#include <unixlib.h>
#include <unixio.h>
#endif /* not VMS */

#endif /* not KPATHSEA_C_STD_H */
