snprintf.c File Reference

#include "setup.h"
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <errno.h>

Macros
#define	PORTABLE_SNPRINTF_VERSION_MAJOR   2
#define	PORTABLE_SNPRINTF_VERSION_MINOR   2
#define	isdigit(c)   ((c) >= '0' && (c) <= '9')
#define	breakeven_point   6 /* some reasonable one-size-fits-all value */
#define	fast_memcpy(d, s, n)
#define	fast_memset(d, c, n)

---

Macro Definition Documentation

#define PORTABLE_SNPRINTF_VERSION_MAJOR   2

#define PORTABLE_SNPRINTF_VERSION_MINOR   2

#define isdigit

(

c

)

((c) >= '0' && (c) <= '9')

#define breakeven_point   6 /* some reasonable one-size-fits-all value */

#define fast_memcpy	(		d,
			s,
			n
	)

Value:

{ register size_t nn = (size_t)(n); \
    if (nn >= breakeven_point) memcpy((d), (s), nn); \
    else if (nn > 0) { /* proc call overhead is worth only for large strings*/\
      register char *dd; register const char *ss; \
      for (ss=(s), dd=(d); nn>0; nn--) *dd++ = *ss++; } }

#define fast_memset	(		d,
			c,
			n
	)

Value:

{ register size_t nn = (size_t)(n); \
    if (nn >= breakeven_point) memset((d), (int)(c), nn); \
    else if (nn > 0) { /* proc call overhead is worth only for large strings*/\
      register char *dd; register const int cc=(int)(c); \
      for (dd=(d); nn>0; nn--) *dd++ = cc; } }