shithub: plan9front

ref: 81dba1327121e0f62fdf42de61402979b7de5da6
dir: /sys/src/libstdio/vsnprintf.c/

View raw version 
/*
 * pANS stdio -- vsnprintf
 */
#include "iolib.h"
int vsnprintf(char *buf, int nbuf, const char *fmt, va_list args){
	int n;
	FILE *f=sopenw();
	if(f==NULL)
		return 0;
	setvbuf(f, buf, _IOFBF, nbuf);
	n=vfprintf(f, fmt, args);
	sclose(f);
	return n;
}