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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2017-10-18 16:13:24 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2017-10-18 16:13:24 +0000 |
| commit | 45923c08b00ccdfd888caf6d2b555a137c563988 (patch) | |
| tree | 5dc167cf4b8e3ff372f59ca9fb6ba0940387c83c /src/libstddjb/uint64_unpack_big.c | |
| parent | 62a04cdd0b6811c07bbafae37fe906a36fa800b1 (diff) | |
| download | skalibs-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.c | 14 |
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) ; } |