git: 9front

ref: 00f7f2ceb6a1818e2975baf6f5c55c1d2d4ecb6e
dir: /sys/src/libstdio/setbuf.c/

View raw version 
/*
 * pANS stdio -- setbuf
 */
#include "iolib.h"
void setbuf(FILE *f, char *buf){
	if(f->state==OPEN){
		if(buf)
			f->bufl=BUFSIZ;
		else{
			buf=f->unbuf;
			f->bufl=0;
		}
		f->rp=f->wp=f->lp=f->buf=buf;
		f->state=RDWR;
	}
	/* else error, but there's no way to report it */
}