csprintf.c

ICCAVR中所有的库函数源码

#include <stdarg.h>
extern int _cprint(void (*_put)(char), const char *fmt, va_list va);

static char *p;
/* static */ void _depi(char c)
	{
	*p++ = c;
	}
	
int csprintf(char *buf, const char *fmt, ...)
	{
	va_list va;
	int val;

	p = buf;
	va_start(va, fmt);
	val = _cprint(_depi, fmt, va);
	va_end(va);
	*p = 0;

	return val;
	}