/**********************************************************************

  util.h -

  $Author$
  created at: Thu Mar  9 11:55:53 JST 1995

  Copyright (C) 1993-2007 Yukihiro Matsumoto

**********************************************************************/

#ifndef RUBY_UTIL_H
#define RUBY_UTIL_H 1

#if defined(__cplusplus)
extern "C" {
#if 0
} /* satisfy cc-mode */
#endif
#endif

#include "ruby/defines.h"
#ifdef RUBY_EXTCONF_H
#include RUBY_EXTCONF_H
#endif

#ifndef _
#ifdef __cplusplus
# ifndef  HAVE_PROTOTYPES
#  define HAVE_PROTOTYPES 1
# endif
# ifndef  HAVE_STDARG_PROTOTYPES
#  define HAVE_STDARG_PROTOTYPES 1
# endif
#endif
#ifdef HAVE_PROTOTYPES
# define _(args) args
#else
# define _(args) ()
#endif
#ifdef HAVE_STDARG_PROTOTYPES
# define __(args) args
#else
# define __(args) ()
#endif
#endif

RUBY_SYMBOL_EXPORT_BEGIN

#define DECIMAL_SIZE_OF_BITS(n) (((n) * 3010 + 9998) / 9999)
/* an approximation of ceil(n * log10(2)), up to 65536 at least */

#define scan_oct(s,l,e) ((int)ruby_scan_oct((s),(l),(e)))
unsigned long ruby_scan_oct(const char *, size_t, size_t *);
#define scan_hex(s,l,e) ((int)ruby_scan_hex((s),(l),(e)))
unsigned long ruby_scan_hex(const char *, size_t, size_t *);

#ifdef HAVE_GNU_QSORT_R
# define ruby_qsort qsort_r
#else
void ruby_qsort(void *, const size_t, const size_t,
		int (*)(const void *, const void *, void *), void *);
#endif

void ruby_setenv(const char *, const char *);
void ruby_unsetenv(const char *);

char *ruby_strdup(const char *);
#undef strdup
#define strdup(s) ruby_strdup(s)

char *ruby_getcwd(void);

double ruby_strtod(const char *, char **);
#undef strtod
#define strtod(s,e) ruby_strtod((s),(e))

void ruby_each_words(const char *, void (*)(const char*, int, void*), void *);

RUBY_SYMBOL_EXPORT_END

#if defined(__cplusplus)
#if 0
{ /* satisfy cc-mode */
#endif
}  /* extern "C" { */
#endif

#endif /* RUBY_UTIL_H */
