X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=tomsfastmath%2Fsrc%2Fbin%2Ffp_reverse.c;fp=tomsfastmath%2Fsrc%2Fbin%2Ffp_reverse.c;h=ece1d4a8a3fd56114ac64df522b76a86d63fc9d0;hb=66bc25938679f1d6a1d1200f329093d82a5e99b4;hp=0000000000000000000000000000000000000000;hpb=a52ee0733f420ca20224049260d6fc5cf7d8f621;p=zpackage

diff --git a/tomsfastmath/src/bin/fp_reverse.c b/tomsfastmath/src/bin/fp_reverse.c
new file mode 100644
index 0000000..ece1d4a
--- /dev/null
+++ b/tomsfastmath/src/bin/fp_reverse.c
@@ -0,0 +1,31 @@
+/* TomsFastMath, a fast ISO C bignum library.
+ * 
+ * This project is meant to fill in where LibTomMath
+ * falls short.  That is speed ;-)
+ *
+ * This project is public domain and free for all purposes.
+ * 
+ * Tom St Denis, tomstdenis@gmail.com
+ */
+#include <tfm_private.h>
+
+/* reverse an array, used for radix code */
+void fp_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;
+  }
+}
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */