Initial Mangos Three Commit

dep/tomlib/Math/src/bn_mp_and.c

@@ -0,0 +1,41 @@
+#include "tommath_private.h"
+#ifdef BN_MP_AND_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+/* AND two ints together */
+int mp_and(const mp_int *a, const mp_int *b, mp_int *c)
+{
+   int     res, ix, px;
+   mp_int  t;
+   const mp_int *x;
+
+   if (a->used > b->used) {
+      if ((res = mp_init_copy(&t, a)) != MP_OKAY) {
+         return res;
+      }
+      px = b->used;
+      x = b;
+   } else {
+      if ((res = mp_init_copy(&t, b)) != MP_OKAY) {
+         return res;
+      }
+      px = a->used;
+      x = a;
+   }
+
+   for (ix = 0; ix < px; ix++) {
+      t.dp[ix] &= x->dp[ix];
+   }
+
+   /* zero digits above the last from the smallest mp_int */
+   for (; ix < t.used; ix++) {
+      t.dp[ix] = 0;
+   }
+
+   mp_clamp(&t);
+   mp_exch(c, &t);
+   mp_clear(&t);
+   return MP_OKAY;
+}
+#endif