1 /* RotateDefs.h -- Rotate functions 2 2023-06-18 : Igor Pavlov : Public domain */ 3 4 #ifndef ZIP7_INC_ROTATE_DEFS_H 5 #define ZIP7_INC_ROTATE_DEFS_H 6 7 #ifdef _MSC_VER 8 9 #include <stdlib.h> 10 11 /* don't use _rotl with old MINGW. It can insert slow call to function. */ 12 13 /* #if (_MSC_VER >= 1200) */ 14 #pragma intrinsic(_rotl) 15 #pragma intrinsic(_rotr) 16 /* #endif */ 17 18 #define rotlFixed(x, n) _rotl((x), (n)) 19 #define rotrFixed(x, n) _rotr((x), (n)) 20 21 #if (_MSC_VER >= 1300) 22 #define Z7_ROTL64(x, n) _rotl64((x), (n)) 23 #define Z7_ROTR64(x, n) _rotr64((x), (n)) 24 #else 25 #define Z7_ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n)))) 26 #define Z7_ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n)))) 27 #endif 28 29 #else 30 31 /* new compilers can translate these macros to fast commands. */ 32 33 #if defined(__clang__) && (__clang_major__ >= 4) \ 34 || defined(__GNUC__) && (__GNUC__ >= 5) 35 /* GCC 4.9.0 and clang 3.5 can recognize more correct version: */ 36 #define rotlFixed(x, n) (((x) << (n)) | ((x) >> (-(n) & 31))) 37 #define rotrFixed(x, n) (((x) >> (n)) | ((x) << (-(n) & 31))) 38 #define Z7_ROTL64(x, n) (((x) << (n)) | ((x) >> (-(n) & 63))) 39 #define Z7_ROTR64(x, n) (((x) >> (n)) | ((x) << (-(n) & 63))) 40 #else 41 /* for old GCC / clang: */ 42 #define rotlFixed(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) 43 #define rotrFixed(x, n) (((x) >> (n)) | ((x) << (32 - (n)))) 44 #define Z7_ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n)))) 45 #define Z7_ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n)))) 46 #endif 47 48 #endif 49 50 #endif 51