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diff --git a/gmp/mpn/vax/gmp-mparam.h b/gmp/mpn/vax/gmp-mparam.h
new file mode 100644
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+++ b/gmp/mpn/vax/gmp-mparam.h
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+/* VAX gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright 2000, 2001, 2002 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/.  */
+
+/* These numbers were measured manually using the tune/speed program.
+   The standard tune/tunup takes too long.  (VAX 8800) */
+
+#define MUL_KARATSUBA_THRESHOLD          14
+#define MUL_TOOM3_THRESHOLD             110
+
+#define SQR_BASECASE_THRESHOLD            6
+#define SQR_KARATSUBA_THRESHOLD          42
+#define SQR_TOOM3_THRESHOLD             250
+
+/* #define DIV_SB_PREINV_THRESHOLD         */
+/* #define DIV_DC_THRESHOLD                */
+/* #define POWM_THRESHOLD                  */
+
+/* #define GCD_ACCEL_THRESHOLD             */
+/* #define JACOBI_BASE_METHOD              */
+
+/* #define DIVREM_1_NORM_THRESHOLD         */
+/* #define DIVREM_1_UNNORM_THRESHOLD       */
+/* #define MOD_1_NORM_THRESHOLD            */
+/* #define MOD_1_UNNORM_THRESHOLD          */
+/* #define USE_PREINV_DIVREM_1             */
+/* #define USE_PREINV_MOD_1                */
+/* #define DIVREM_2_THRESHOLD              */
+/* #define DIVEXACT_1_THRESHOLD            */
+/* #define MODEXACT_1_ODD_THRESHOLD        */
+
+/* #define GET_STR_DC_THRESHOLD            */
+/* #define GET_STR_PRECOMPUTE_THRESHOLD    */
+#define SET_STR_THRESHOLD              3400