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authorRich Felker <dalias@aerifal.cx>2019-10-17 16:26:22 -0400
committerRich Felker <dalias@aerifal.cx>2019-10-17 16:26:22 -0400
commit316730cdc7a330cddf288b4e5c1de5daa64e19f4 (patch)
tree53b9a5782fbcbb40962ee46e09734038c69958f7
parent4d3a162d001a93edd285fb6603a883c30ae553ba (diff)
downloadmusl-316730cdc7a330cddf288b4e5c1de5daa64e19f4.tar.gz
make endian.h expose unprefixed macros, functions in standard profile
the resolution of Austin Group issue #162 adds endian.h as a standard header for future versions of the standard, making it no longer acceptable for some of the functionality to be hidden behind _BSD_SOURCE or _GNU_SOURCE. the definitions of the [lb]etoh{16,32,64} function-like macros are kept conditional since they are alternate names which the standard did not adopt.
-rw-r--r--include/endian.h36
1 files changed, 20 insertions, 16 deletions
diff --git a/include/endian.h b/include/endian.h
index 2c2ad5f4..172c4320 100644
--- a/include/endian.h
+++ b/include/endian.h
@@ -3,19 +3,19 @@
#include <features.h>
-#define __PDP_ENDIAN 3412
+#define __NEED_uint16_t
+#define __NEED_uint32_t
+#define __NEED_uint64_t
#include <bits/alltypes.h>
-#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define __PDP_ENDIAN 3412
#define BIG_ENDIAN __BIG_ENDIAN
#define LITTLE_ENDIAN __LITTLE_ENDIAN
#define PDP_ENDIAN __PDP_ENDIAN
#define BYTE_ORDER __BYTE_ORDER
-#include <stdint.h>
-
static __inline uint16_t __bswap16(uint16_t __x)
{
return __x<<8 | __x>>8;
@@ -34,43 +34,47 @@ static __inline uint64_t __bswap64(uint64_t __x)
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define htobe16(x) __bswap16(x)
#define be16toh(x) __bswap16(x)
-#define betoh16(x) __bswap16(x)
#define htobe32(x) __bswap32(x)
#define be32toh(x) __bswap32(x)
-#define betoh32(x) __bswap32(x)
#define htobe64(x) __bswap64(x)
#define be64toh(x) __bswap64(x)
-#define betoh64(x) __bswap64(x)
#define htole16(x) (uint16_t)(x)
#define le16toh(x) (uint16_t)(x)
-#define letoh16(x) (uint16_t)(x)
#define htole32(x) (uint32_t)(x)
#define le32toh(x) (uint32_t)(x)
-#define letoh32(x) (uint32_t)(x)
#define htole64(x) (uint64_t)(x)
#define le64toh(x) (uint64_t)(x)
-#define letoh64(x) (uint64_t)(x)
#else
#define htobe16(x) (uint16_t)(x)
#define be16toh(x) (uint16_t)(x)
-#define betoh16(x) (uint16_t)(x)
#define htobe32(x) (uint32_t)(x)
#define be32toh(x) (uint32_t)(x)
-#define betoh32(x) (uint32_t)(x)
#define htobe64(x) (uint64_t)(x)
#define be64toh(x) (uint64_t)(x)
-#define betoh64(x) (uint64_t)(x)
#define htole16(x) __bswap16(x)
#define le16toh(x) __bswap16(x)
-#define letoh16(x) __bswap16(x)
#define htole32(x) __bswap32(x)
#define le32toh(x) __bswap32(x)
-#define letoh32(x) __bswap32(x)
#define htole64(x) __bswap64(x)
#define le64toh(x) __bswap64(x)
-#define letoh64(x) __bswap64(x)
#endif
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define betoh16(x) __bswap16(x)
+#define betoh32(x) __bswap32(x)
+#define betoh64(x) __bswap64(x)
+#define letoh16(x) (uint16_t)(x)
+#define letoh32(x) (uint32_t)(x)
+#define letoh64(x) (uint64_t)(x)
+#else
+#define betoh16(x) (uint16_t)(x)
+#define betoh32(x) (uint32_t)(x)
+#define betoh64(x) (uint64_t)(x)
+#define letoh16(x) __bswap16(x)
+#define letoh32(x) __bswap32(x)
+#define letoh64(x) __bswap64(x)
+#endif
#endif
#endif