1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_cmp_mag.c b/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_cmp_mag.c
new file mode 100644
index 0000000..f144ea9
--- /dev/null
+++ b/third_party/heimdal/lib/hcrypto/libtommath/bn_mp_cmp_mag.c
@@ -0,0 +1,39 @@
+#include "tommath_private.h"
+#ifdef BN_MP_CMP_MAG_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+/* compare maginitude of two ints (unsigned) */
+mp_ord mp_cmp_mag(const mp_int *a, const mp_int *b)
+{
+   int     n;
+   const mp_digit *tmpa, *tmpb;
+
+   /* compare based on # of non-zero digits */
+   if (a->used > b->used) {
+      return MP_GT;
+   }
+
+   if (a->used < b->used) {
+      return MP_LT;
+   }
+
+   /* alias for a */
+   tmpa = a->dp + (a->used - 1);
+
+   /* alias for b */
+   tmpb = b->dp + (a->used - 1);
+
+   /* compare based on digits  */
+   for (n = 0; n < a->used; ++n, --tmpa, --tmpb) {
+      if (*tmpa > *tmpb) {
+         return MP_GT;
+      }
+
+      if (*tmpa < *tmpb) {
+         return MP_LT;
+      }
+   }
+   return MP_EQ;
+}
+#endif