fxlibc/src/libc/stdio/setbuf.c

#include <stdio.h>

void setbuf(FILE * restrict fp, char * restrict buf)
{
	if(buf) {
		setvbuf(fp, buf, _IOFBF, BUFSIZ);
	}
	else {
		setvbuf(fp, buf, _IONBF, 0);
	}
}