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diff --git a/gmp/randmt.h b/gmp/randmt.h
new file mode 100644
index 00000000..fc233810
--- /dev/null
+++ b/gmp/randmt.h
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+/* Mersenne Twister pseudo-random number generator defines.
+
+Copyright 2002, 2003 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+
+/* Number of extractions used to warm the buffer up.  */
+#define WARM_UP 2000
+
+/* Period parameters.  */
+#define N 624
+#define M 397
+#define MATRIX_A 0x9908B0DF   /* Constant vector a.  */
+
+/* State structure for MT.  */
+typedef struct
+{
+  gmp_uint_least32_t mt[N];    /* State array.  */
+  int mti;                     /* Index of current value.  */
+} gmp_rand_mt_struct;
+
+
+void __gmp_mt_recalc_buffer __GMP_PROTO ((gmp_uint_least32_t *));
+void __gmp_randget_mt __GMP_PROTO ((gmp_randstate_t, mp_ptr, unsigned long int));
+void __gmp_randclear_mt __GMP_PROTO ((gmp_randstate_t rstate));
+void __gmp_randiset_mt __GMP_PROTO ((gmp_randstate_ptr, gmp_randstate_srcptr));