ref: b86ca0bf8a11e9f03aa0a6af915285ef2bf80bd3
dir: /libc/vfprint.c/
#include <u.h>
#include <libc.h>
#include "fmtdef.h"
int
vfprint(int fd, char *fmt, va_list args)
{
Fmt f;
char buf[256];
int n;
fmtfdinit(&f, fd, buf, sizeof(buf));
VA_COPY(f.args,args);
n = dofmt(&f, fmt);
VA_END(f.args);
if(n > 0 && __fmtFdFlush(&f) == 0)
return -1;
return n;
}