source: asp3_tinet_ecnl_rx/trunk/musl-1.1.18/src/stdio/fread.c@ 337

#include "stdio_impl.h"
#include <string.h>

#define MIN(a,b) ((a)<(b) ? (a) : (b))

size_t fread(void *restrict destv, size_t size, size_t nmemb, FILE *restrict f)
{
        unsigned char *dest = destv;
        size_t len = size*nmemb, l = len, k;
        if (!size) nmemb = 0;

        FLOCK(f);

        f->mode |= f->mode-1;

        if (f->rend - f->rpos > 0) {
                /* First exhaust the buffer. */
                k = MIN(f->rend - f->rpos, l);
                memcpy(dest, f->rpos, k);
                f->rpos += k;
                dest += k;
                l -= k;
        }
        
        /* Read the remainder directly */
        for (; l; l-=k, dest+=k) {
                k = __toread(f) ? 0 : f->read(f, dest, l);
                if (k+1<=1) {
                        FUNLOCK(f);
                        return (len-l)/size;
                }
        }

        FUNLOCK(f);
        return nmemb;
}

weak_alias(fread, fread_unlocked);