git: 9front

ref: 5d6a11a90fde3dcae679064c67612e8e3b8317bb
dir: /sys/src/ape/lib/ap/stdio/vsprintf.c/

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/*
 * pANS stdio -- vsprintf
 */
#include "iolib.h"
int vsprintf(char *buf, const char *fmt, va_list args){
	int n;
	FILE *f=_IO_sopenw();
	if(f==NULL)
		return 0;
	setvbuf(f, buf, _IOFBF, 100000);
	n=vfprintf(f, fmt, args);
	_IO_sclose(f);
	return n;
}