F4 133 ext/hash/hash_haval.c #define F4(x6,x5,x4,x3,x2,x1,x0) ( ((x1) & (x2) & (x3)) ^ ((x2) & (x4) & (x5)) ^ ((x3) & (x4) & (x6)) ^ \ F4 140 ext/hash/hash_ripemd.c #define F4(x,y,z) ((x) ^ ((y) | (~(z)))) F4 72 ext/pdo_sqlite/sqlite/src/md5.c #define F4(x, y, z) (y ^ (x | ~z))