common.h

linear time－frequency toolbox

#ifndef COMMON_H
#define COMMON_H 1

#if HAVE_CONFIG_H
#  include <config.h>
#endif

#include <stdio.h>
#include <sys/types.h>

#if STDC_HEADERS
#  include <stdlib.h>
#  include <string.h>
#elif HAVE_STRINGS_H
#  include <strings.h>
#endif /*STDC_HEADERS*/

#if HAVE_UNISTD_H
#  include <unistd.h>
#endif

#ifdef __cplusplus
#  define BEGIN_C_DECLS extern "C" {
#  define END_C_DECLS   }
#else /* !__cplusplus */
#  define BEGIN_C_DECLS
#  define END_C_DECLS
#endif /* __cplusplus */

#define XCALLOC(type, num)                                  \
        ((type *) xcalloc ((num), sizeof(type)))
#define XMALLOC(type, num)                                  \
        ((type *) xmalloc ((num) * sizeof(type)))
#define XREALLOC(type, p, num)                              \
        ((type *) xrealloc ((p), (num) * sizeof(type)))
#define XFREE(stale)                            do {        \
        if (stale) { free (stale);  stale = 0; }            \
                                                } while (0)
#if !HAVE_BZERO && HAVE_MEMSET
# define bzero(buf, bytes)      ((void) memset (buf, 0, bytes))
#endif

BEGIN_C_DECLS

extern void *xcalloc    (size_t num, size_t size);
extern void *xmalloc    (size_t num);
extern void *xrealloc   (void *p, size_t num);
extern char *xstrdup    (const char *string);
extern char *xstrerror  (int errnum);

END_C_DECLS

#endif /* common.h */