diff tomsfastmath/src/numtheory/fp_lcm.c @ 643:a362b62d38b2 dropbear-tfm

Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a with Makefile.in renamed
author Matt Johnston <matt@ucc.asn.au>
date Wed, 23 Nov 2011 18:10:20 +0700
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tomsfastmath/src/numtheory/fp_lcm.c	Wed Nov 23 18:10:20 2011 +0700
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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, [email protected]
+ */
+#include <tfm.h>
+
+/* c = [a, b] */
+void fp_lcm(fp_int *a, fp_int *b, fp_int *c)
+{
+   fp_int  t1, t2;
+
+   fp_init(&t1);
+   fp_init(&t2);
+   fp_gcd(a, b, &t1);
+   if (fp_cmp_mag(a, b) == FP_GT) {
+      fp_div(a, &t1, &t2, NULL);
+      fp_mul(b, &t2, c);
+   } else {
+      fp_div(b, &t1, &t2, NULL);
+      fp_mul(a, &t2, c);
+   }   
+}
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */