hshift            500 ext/gd/libgd/gd_gif_out.c     register int hshift;
hshift            526 ext/gd/libgd/gd_gif_out.c     hshift = 0;
hshift            528 ext/gd/libgd/gd_gif_out.c         ++hshift;
hshift            529 ext/gd/libgd/gd_gif_out.c     hshift = 8 - hshift;                /* set hash code range bound */
hshift            545 ext/gd/libgd/gd_gif_out.c         i = (((code_int)c << hshift) ^ ent);    /* xor hashing */