--- a/libtommath/bn_mp_copy.c	Wed May 15 21:59:45 2019 +0800
+++ b/libtommath/bn_mp_copy.c	Mon Sep 16 15:50:38 2019 +0200
@@ -1,4 +1,4 @@
-#include <tommath_private.h>
+#include "tommath_private.h"
 #ifdef BN_MP_COPY_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
@@ -9,60 +9,56 @@
  * Michael Fromberger but has been written from scratch with
  * additional optimizations in place.
  *
- * The library is free for all purposes without any express
- * guarantee it works.
- *
- * Tom St Denis, [email protected], http://libtom.org
+ * SPDX-License-Identifier: Unlicense
  */
 
 /* copy, b = a */
-int
-mp_copy (mp_int * a, mp_int * b)
+int mp_copy(const mp_int *a, mp_int *b)
 {
-  int     res, n;
+   int     res, n;
 
-  /* if dst == src do nothing */
-  if (a == b) {
-    return MP_OKAY;
-  }
+   /* if dst == src do nothing */
+   if (a == b) {
+      return MP_OKAY;
+   }
 
-  /* grow dest */
-  if (b->alloc < a->used) {
-     if ((res = mp_grow (b, a->used)) != MP_OKAY) {
-        return res;
-     }
-  }
+   /* grow dest */
+   if (b->alloc < a->used) {
+      if ((res = mp_grow(b, a->used)) != MP_OKAY) {
+         return res;
+      }
+   }
 
-  /* zero b and copy the parameters over */
-  {
-    mp_digit *tmpa, *tmpb;
+   /* zero b and copy the parameters over */
+   {
+      mp_digit *tmpa, *tmpb;
+
+      /* pointer aliases */
 
-    /* pointer aliases */
+      /* source */
+      tmpa = a->dp;
 
-    /* source */
-    tmpa = a->dp;
+      /* destination */
+      tmpb = b->dp;
 
-    /* destination */
-    tmpb = b->dp;
+      /* copy all the digits */
+      for (n = 0; n < a->used; n++) {
+         *tmpb++ = *tmpa++;
+      }
 
-    /* copy all the digits */
-    for (n = 0; n < a->used; n++) {
-      *tmpb++ = *tmpa++;
-    }
+      /* clear high digits */
+      for (; n < b->used; n++) {
+         *tmpb++ = 0;
+      }
+   }
 
-    /* clear high digits */
-    for (; n < b->used; n++) {
-      *tmpb++ = 0;
-    }
-  }
-
-  /* copy used count and sign */
-  b->used = a->used;
-  b->sign = a->sign;
-  return MP_OKAY;
+   /* copy used count and sign */
+   b->used = a->used;
+   b->sign = a->sign;
+   return MP_OKAY;
 }
 #endif
 
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */
+/* ref:         HEAD -> master, tag: v1.1.0 */
+/* git commit:  08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
+/* commit time: 2019-01-28 20:32:32 +0100 */