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-rw-r--r--src/liblzma/check/crc_macros.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/liblzma/check/crc_macros.h b/src/liblzma/check/crc_macros.h
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+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc_macros
+/// \brief Some endian-dependent macros for CRC32 and CRC64
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef WORDS_BIGENDIAN
+# include "check_byteswap.h"
+
+# define A(x) ((x) >> 24)
+# define B(x) (((x) >> 16) & 0xFF)
+# define C(x) (((x) >> 8) & 0xFF)
+# define D(x) ((x) & 0xFF)
+
+# define S8(x) ((x) << 8)
+# define S32(x) ((x) << 32)
+
+#else
+# define A(x) ((x) & 0xFF)
+# define B(x) (((x) >> 8) & 0xFF)
+# define C(x) (((x) >> 16) & 0xFF)
+# define D(x) ((x) >> 24)
+
+# define S8(x) ((x) >> 8)
+# define S32(x) ((x) >> 32)
+#endif