ref: 88a35c80586c489b991dddb4299f72c9c4ec6168
dir: /sys/src/libstdio/vsnprintf.c/
/* * 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; }