From 679b8bdb5c40ca1909b025db10ddb5a98967c60e Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@member.fsf.org>
Date: Sun, 20 Dec 2015 14:31:40 +0100
Subject: optimise implementations of {hton,ntoh}{s,l,ll}
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Signed-off-by: Mattias Andrée <maandree@member.fsf.org>
---
 src/arpa/inet/htonl.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/arpa/inet/htonl.c')

diff --git a/src/arpa/inet/htonl.c b/src/arpa/inet/htonl.c
index 7d998d4..8422fdc 100644
--- a/src/arpa/inet/htonl.c
+++ b/src/arpa/inet/htonl.c
@@ -16,6 +16,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <arpa/inet.h>
+#include <bits/intconf.h>
+
 
 
 /**
@@ -31,11 +33,19 @@
  */
 uint32_t _htonl(uint32_t value)
 {
+#if __INT32_BYTEORDER == 0x01020304
+  return value;
+#elif __INT32_BYTEORDER == 0x04030201
+  return (value >> 24) | ((value & 0xFF0000) >> 8) | ((value & 0x00FF00) << 8) | (value << 24);
+#elif __INT32_BYTEORDER == 0x02010403
+  return (value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
+#else
   char rc[4];
   rc[0] = (value >> 24) & 255;
   rc[1] = (value >> 16) & 255;
   rc[2] = (value >>  8) & 255;
   rc[3] = (value >>  0) & 255;
   return *(uint32_t*)rc;
+#endif
 }
 
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