--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/libtommath/bn_mp_to_signed_bin.c	Tue May 08 16:09:12 2018 +0900
@@ -0,0 +1,33 @@
+#include <tommath_private.h>
+#ifdef BN_MP_TO_SIGNED_BIN_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * 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, tstdenis82@gmail.com, http://libtom.org
+ */
+
+/* store in signed [big endian] format */
+int mp_to_signed_bin (mp_int * a, unsigned char *b)
+{
+  int     res;
+
+  if ((res = mp_to_unsigned_bin (a, b + 1)) != MP_OKAY) {
+    return res;
+  }
+  b[0] = (a->sign == MP_ZPOS) ? (unsigned char)0 : (unsigned char)1;
+  return MP_OKAY;
+}
+#endif
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */