X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=tomsfastmath%2Fsrc%2Faddsub%2Ffp_cmp.c;fp=tomsfastmath%2Fsrc%2Faddsub%2Ffp_cmp.c;h=23f27e8aeab0b534a9d3c62c6234d1d2305b3a59;hb=66bc25938679f1d6a1d1200f329093d82a5e99b4;hp=0000000000000000000000000000000000000000;hpb=a52ee0733f420ca20224049260d6fc5cf7d8f621;p=zpackage

diff --git a/tomsfastmath/src/addsub/fp_cmp.c b/tomsfastmath/src/addsub/fp_cmp.c
new file mode 100644
index 0000000..23f27e8
--- /dev/null
+++ b/tomsfastmath/src/addsub/fp_cmp.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>
+
+int fp_cmp(fp_int *a, fp_int *b)
+{
+   if (a->sign == FP_NEG && b->sign == FP_ZPOS) {
+      return FP_LT;
+   } else if (a->sign == FP_ZPOS && b->sign == FP_NEG) {
+      return FP_GT;
+   } else {
+      /* compare digits */
+      if (a->sign == FP_NEG) {
+         /* if negative compare opposite direction */
+         return fp_cmp_mag(b, a);
+      } else {
+         return fp_cmp_mag(a, b);
+      }
+   }
+}
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */