git: 9front

ref: f1400cfe8d0fc3dc0753d7f2b171a9df94c8ebfb
dir: /sys/src/ape/lib/ap/stdio/vsnprintf.c/

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/*
 * pANS stdio -- vsnprintf
 */
#define _C99_SNPRINTF_EXTENSION

#include "iolib.h"

int vsnprintf(char *buf, size_t nbuf, const char *fmt, va_list args){
	int n;
	FILE *f=_IO_sopenw();
	if(f==NULL)
		return 0;
	setvbuf(f, buf, _IOFBF, nbuf);
	n=vfprintf(f, fmt, args);
	_IO_sclose(f);
	return n;
}