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authorLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
commit3534b428629be185e096be99e3bd5fdfe32d5544 (patch)
tree210ef3198ed66bc7f7b7bf6a85e4579f455e5a36 /src/libstddjb/uint64_reverse.c
downloadskalibs-3534b428629be185e096be99e3bd5fdfe32d5544.tar.xz
initial commit with rc for skalibs-2.0.0.0
Diffstat (limited to 'src/libstddjb/uint64_reverse.c')
-rw-r--r--src/libstddjb/uint64_reverse.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/libstddjb/uint64_reverse.c b/src/libstddjb/uint64_reverse.c
new file mode 100644
index 0000000..f8730fe
--- /dev/null
+++ b/src/libstddjb/uint64_reverse.c
@@ -0,0 +1,15 @@
+/* ISC license. */
+
+#include <skalibs/uint64.h>
+
+void uint64_reverse (char *s, unsigned int n)
+{
+ while (n--)
+ {
+ char c = s[0] ; s[0] = s[7] ; s[7] = c ;
+ c = s[1] ; s[1] = s[6] ; s[6] = c ;
+ c = s[2] ; s[2] = s[5] ; s[5] = c ;
+ c = s[3] ; s[3] = s[4] ; s[4] = c ;
+ s += 8 ;
+ }
+}