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authorLaurent Bercot <ska-skaware@skarnet.org>2017-10-18 16:13:24 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2017-10-18 16:13:24 +0000
commit45923c08b00ccdfd888caf6d2b555a137c563988 (patch)
tree5dc167cf4b8e3ff372f59ca9fb6ba0940387c83c /src/libstddjb/uint64_unpack_big.c
parent62a04cdd0b6811c07bbafae37fe906a36fa800b1 (diff)
downloadskalibs-45923c08b00ccdfd888caf6d2b555a137c563988.tar.xz
Better packing / unpacking code
Godbolted for x86_64 with gcc and clang.
Diffstat (limited to 'src/libstddjb/uint64_unpack_big.c')
-rw-r--r--src/libstddjb/uint64_unpack_big.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/src/libstddjb/uint64_unpack_big.c b/src/libstddjb/uint64_unpack_big.c
index 3554dcc..f4e7d52 100644
--- a/src/libstddjb/uint64_unpack_big.c
+++ b/src/libstddjb/uint64_unpack_big.c
@@ -1,17 +1,11 @@
/* ISC license. */
+#include <string.h>
#include <skalibs/uint64.h>
-#include <skalibs/bytestr.h>
void uint64_unpack_big (char const *s, uint64_t *u)
{
- uint64_t r = T8((unsigned char)s[0]) ; r <<= 8 ;
- r += T8((unsigned char)s[1]) ; r <<= 8 ;
- r += T8((unsigned char)s[2]) ; r <<= 8 ;
- r += T8((unsigned char)s[3]) ; r <<= 8 ;
- r += T8((unsigned char)s[4]) ; r <<= 8 ;
- r += T8((unsigned char)s[5]) ; r <<= 8 ;
- r += T8((unsigned char)s[6]) ; r <<= 8 ;
- r += T8((unsigned char)s[7]) ;
- *u = r ;
+ uint64_t x ;
+ memcpy(&x, s, sizeof(uint64_t)) ;
+ *u = uint64_big(x) ;
}