commit files needed for zpm-fetchurl

[zpackage] / tomsfastmath / src / addsub / fp_submod.c

diff --git a/tomsfastmath/src/addsub/fp_submod.c b/tomsfastmath/src/addsub/fp_submod.c
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+/* 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>
+
+/* d = a - b (mod c) */
+int fp_submod(fp_int *a, fp_int *b, fp_int *c, fp_int *d)
+{
+  fp_int tmp;
+  fp_zero(&tmp);
+  fp_sub(a, b, &tmp);
+  return fp_mod(&tmp, c, d);
+}
+
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */