Revert "Remove gmp from AOS"
This reverts commit f37c97684f0910a3f241394549392f00145ab0f7.
We need gmp for SymEngine for symbolicmanipultion in C++
Change-Id: Ia13216d1715cf96944f7b4f422b7a799f921d4a4
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/third_party/gmp/mpq/mul.c b/third_party/gmp/mpq/mul.c
new file mode 100644
index 0000000..270dafc
--- /dev/null
+++ b/third_party/gmp/mpq/mul.c
@@ -0,0 +1,102 @@
+/* mpq_mul -- multiply two rational numbers.
+
+Copyright 1991, 1994-1996, 2000-2002 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 either:
+
+ * 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.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+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 General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#include "gmp-impl.h"
+
+
+void
+mpq_mul (mpq_ptr prod, mpq_srcptr op1, mpq_srcptr op2)
+{
+ mpz_t gcd1, gcd2;
+ mpz_t tmp1, tmp2;
+ mp_size_t op1_num_size;
+ mp_size_t op1_den_size;
+ mp_size_t op2_num_size;
+ mp_size_t op2_den_size;
+ mp_size_t alloc;
+ TMP_DECL;
+
+ if (op1 == op2)
+ {
+ /* No need for any GCDs when squaring. */
+ mpz_mul (mpq_numref (prod), mpq_numref (op1), mpq_numref (op1));
+ mpz_mul (mpq_denref (prod), mpq_denref (op1), mpq_denref (op1));
+ return;
+ }
+
+ op1_num_size = ABSIZ(NUM(op1));
+ op1_den_size = SIZ(DEN(op1));
+ op2_num_size = ABSIZ(NUM(op2));
+ op2_den_size = SIZ(DEN(op2));
+
+ if (op1_num_size == 0 || op2_num_size == 0)
+ {
+ /* We special case this to simplify allocation logic; gcd(0,x) = x
+ is a singular case for the allocations. */
+ SIZ(NUM(prod)) = 0;
+ MPZ_NEWALLOC (DEN(prod), 1)[0] = 1;
+ SIZ(DEN(prod)) = 1;
+ return;
+ }
+
+ TMP_MARK;
+
+ alloc = MIN (op1_num_size, op2_den_size);
+ MPZ_TMP_INIT (gcd1, alloc);
+
+ alloc = MIN (op2_num_size, op1_den_size);
+ MPZ_TMP_INIT (gcd2, alloc);
+
+ alloc = MAX (op1_num_size, op2_den_size);
+ MPZ_TMP_INIT (tmp1, alloc);
+
+ alloc = MAX (op2_num_size, op1_den_size);
+ MPZ_TMP_INIT (tmp2, alloc);
+
+ /* PROD might be identical to either operand, so don't store the result there
+ until we are finished with the input operands. We can overwrite the
+ numerator of PROD when we are finished with the numerators of OP1 and
+ OP2. */
+
+ mpz_gcd (gcd1, NUM(op1), DEN(op2));
+ mpz_gcd (gcd2, NUM(op2), DEN(op1));
+
+ mpz_divexact_gcd (tmp1, NUM(op1), gcd1);
+ mpz_divexact_gcd (tmp2, NUM(op2), gcd2);
+
+ mpz_mul (NUM(prod), tmp1, tmp2);
+
+ mpz_divexact_gcd (tmp1, DEN(op2), gcd1);
+ mpz_divexact_gcd (tmp2, DEN(op1), gcd2);
+
+ mpz_mul (DEN(prod), tmp1, tmp2);
+
+ TMP_FREE;
+}