New macro LE_READ_UINT64.

diff --git a/ChangeLog b/ChangeLog
index 4aa393a29915ffdf0e137a61ba93d0b84e2828e9..d2c8e6d1dec10db15b0c4f97f739ac8c76f46732 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2012-11-15  Niels Möller  <nisse@lysator.liu.se>
+
+       * macros.h (LE_READ_UINT64): New macro.
+
 2012-11-13  Niels Möller  <nisse@lysator.liu.se>
 
        * sha3-permute.c (sha3_permute): Micro optimizations. Partial

diff --git a/macros.h b/macros.h
index dee35f8f0a3b30a7dffb612216112f62148c8d45..ee2060431d6d2f0dcde6ea69b55b9ccfb74f2ba2 100644 (file)
--- a/macros.h
+++ b/macros.h
@@ -87,6 +87,16 @@ do {                                         \
 } while(0)
 
 /* And the other, little-endian, byteorder */
+#define LE_READ_UINT64(p)                      \
+(  (((uint64_t) (p)[7]) << 56)                 \
+ | (((uint64_t) (p)[6]) << 48)                 \
+ | (((uint64_t) (p)[5]) << 40)                 \
+ | (((uint64_t) (p)[4]) << 32)                 \
+ | (((uint64_t) (p)[3]) << 24)                 \
+ | (((uint64_t) (p)[2]) << 16)                 \
+ | (((uint64_t) (p)[1]) << 8)                  \
+ |  ((uint64_t) (p)[0]))
+
 #define LE_WRITE_UINT64(p, i)                  \
 do {                                           \
   (p)[7] = ((i) >> 56) & 0xff;                 \