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Date: Thu, 12 Aug 2010 21:35:28 -0300
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Subject: Re: diff /usr/include/endian.orig.h /usr/include/endian.h > endian.h.diff
From: Pedro Izecksohn <pedro DOT izecksohn AT gmail DOT com>
To: cygwin AT cygwin DOT com
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--- I wrote:
> Defines macros for to convert the endianness of 16, 32 and 64 bits
> integer types.
>
> diff -c /usr/include/endian.orig.h /usr/include/endian.h

My previous diff is wrong. The right one follows:

*** /usr/include/endian.orig.h	Mon Apr 12 14:09:58 2010
--- /usr/include/endian.h	Thu Aug 12 21:28:01 2010
***************
*** 36,40 ****
  #elif __BYTE_ORDER == __BIG_ENDIAN
  # define __LONG_LONG_PAIR(HI, LO) HI, LO
  #endif
- #endif /*_ENDIAN_H_*/

--- 36,83 ----
  #elif __BYTE_ORDER == __BIG_ENDIAN
  # define __LONG_LONG_PAIR(HI, LO) HI, LO
  #endif

+ #ifdef _BSD_SOURCE
+
+ #include <byteswap.h>
+
+ #if __BYTE_ORDER == __LITTLE_ENDIAN
+
+ #define htobe16(x) bswap_16(x)
+ #define htobe32(x) bswap_32(x)
+ #define htobe64(x) bswap_64(x)
+
+ #define be16toh(x) bswap_16(x)
+ #define be32toh(x) bswap_32(x)
+ #define be64toh(x) bswap_64(x)
+
+ #define htole16(x) (x)
+ #define htole32(x) (x)
+ #define htole64(x) (x)
+
+ #define le16toh(x) (x)
+ #define le32toh(x) (x)
+ #define le64toh(x) (x)
+
+ #else /* __BYTE_ORDER == __BIG_ENDIAN */
+
+ #define htobe16(x) (x)
+ #define htobe32(x) (x)
+ #define htobe64(x) (x)
+
+ #define be16toh(x) (x)
+ #define be32toh(x) (x)
+ #define be64toh(x) (x)
+
+ #define htole16(x) bswap_16(x)
+ #define htole32(x) bswap_32(x)
+ #define htole64(x) bswap_64(x)
+
+ #define le16toh(x) bswap_16(x)
+ #define le32toh(x) bswap_32(x)
+ #define le64toh(x) bswap_64(x)
+
+ #endif
+ #endif /*_BSD_SOURCE*/
+
+ #endif /*_ENDIAN_H_*/

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