epsdel1994

#include <stdint.h>

/* for Reversi (8x8) */

uint64_t shiftl(uint64_t b){ return (b << 1) & 0xfefefefefefefefe; }
uint64_t shiftr(uint64_t b){ return (b >> 1) & 0x7f7f7f7f7f7f7f7f; }
uint64_t shiftu(uint64_t b){ return (b << 8); }
uint64_t shiftd(uint64_t b){ return (b >> 8); }