verify_32.c in rbnacl-libsodium-1.0.7

- old
+ new

@@ -1,40 +1,17 @@
-#include "api.h"
 
-int crypto_verify_32(const unsigned char *x,const unsigned char *y)
+#include <stddef.h>
+#include <stdint.h>
+
+#include "crypto_verify_32.h"
+
+int
+crypto_verify_32(const unsigned char *x, const unsigned char *y)
 {
-  unsigned int differentbits = 0;
-#define F(i) differentbits |= x[i] ^ y[i];
-  F(0)
-  F(1)
-  F(2)
-  F(3)
-  F(4)
-  F(5)
-  F(6)
-  F(7)
-  F(8)
-  F(9)
-  F(10)
-  F(11)
-  F(12)
-  F(13)
-  F(14)
-  F(15)
-  F(16)
-  F(17)
-  F(18)
-  F(19)
-  F(20)
-  F(21)
-  F(22)
-  F(23)
-  F(24)
-  F(25)
-  F(26)
-  F(27)
-  F(28)
-  F(29)
-  F(30)
-  F(31)
-  return (1 & ((differentbits - 1) >> 8)) - 1;
+    uint_fast16_t d = 0U;
+    int           i;
+
+    for (i = 0; i < 32; i++) {
+        d |= x[i] ^ y[i];
+    }
+    return (1 & ((d - 1) >> 8)) - 1;
 }