summaryrefslogtreecommitdiffstats
path: root/tcl8.6/libtommath/bn_reverse.c
diff options
context:
space:
mode:
Diffstat (limited to 'tcl8.6/libtommath/bn_reverse.c')
-rw-r--r--tcl8.6/libtommath/bn_reverse.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/tcl8.6/libtommath/bn_reverse.c b/tcl8.6/libtommath/bn_reverse.c
new file mode 100644
index 0000000..9d7fd29
--- /dev/null
+++ b/tcl8.6/libtommath/bn_reverse.c
@@ -0,0 +1,35 @@
+#include <tommath.h>
+#ifdef BN_REVERSE_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
+ */
+
+/* reverse an array, used for radix code */
+void
+bn_reverse (unsigned char *s, int len)
+{
+ int ix, iy;
+ unsigned char t;
+
+ ix = 0;
+ iy = len - 1;
+ while (ix < iy) {
+ t = s[ix];
+ s[ix] = s[iy];
+ s[iy] = t;
+ ++ix;
+ --iy;
+ }
+}
+#endif