/* @(#)fread.c	4.1 (Berkeley) 05/29/84 */
#include	<stdio.h>

fread(ptr, size, count, iop)
	register char *ptr;
	unsigned size, count;
	register FILE *iop;
{
	register int s;

	s = size * count;
	while (s > 0) {
		if (iop->_cnt < s) {
			if (iop->_cnt > 0) {
				bcopy(iop->_ptr, ptr, iop->_cnt);
				ptr += iop->_cnt;
				s -= iop->_cnt;
			}
			/*
			 * filbuf clobbers _cnt & _ptr,
			 * so don't waste time setting them.
			 */
			if ((*ptr++ = _filbuf(iop)) == EOF)
				break;
			s--;
		}
		if (iop->_cnt >= s) {
			bcopy(iop->_ptr, ptr, s);
			iop->_ptr += s;
			iop->_cnt -= s;
			return (count);
		}
	}
	return (count - ((s + size - 1) / size));
}