183 #define F4(x, y, z)  (y ^ (x | ~z))  macro
254   MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);  in MD5Transform()
255   MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);  in MD5Transform()
256   MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);  in MD5Transform()
257   MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);  in MD5Transform()
258   MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);  in MD5Transform()
259   MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);  in MD5Transform()
260   MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);  in MD5Transform()
261   MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);  in MD5Transform()
262   MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);  in MD5Transform()
263   MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);  in MD5Transform()
264   MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);  in MD5Transform()
265   MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);  in MD5Transform()
266   MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);  in MD5Transform()
267   MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);  in MD5Transform()
268   MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);  in MD5Transform()
269   MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);  in MD5Transform()