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/mpf/mul.c b/third_party/gmp/mpf/mul.c
new file mode 100644
index 0000000..3099461
--- /dev/null
+++ b/third_party/gmp/mpf/mul.c
@@ -0,0 +1,134 @@
+/* mpf_mul -- Multiply two floats.
+
+Copyright 1993, 1994, 1996, 2001, 2005, 2019 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
+mpf_mul (mpf_ptr r, mpf_srcptr u, mpf_srcptr v)
+{
+ mp_size_t sign_product;
+ mp_size_t prec = r->_mp_prec;
+ mp_size_t rsize;
+ mp_limb_t cy_limb;
+ mp_ptr rp, tp;
+ mp_size_t adj;
+ TMP_DECL;
+
+ if (u == v)
+ {
+ mp_srcptr up;
+ mp_size_t usize;
+
+ usize = u->_mp_size;
+ sign_product = 0;
+
+ usize = ABS (usize);
+
+ up = u->_mp_d;
+ if (usize > prec)
+ {
+ up += usize - prec;
+ usize = prec;
+ }
+
+ if (usize == 0)
+ {
+ r->_mp_size = 0;
+ r->_mp_exp = 0; /* ??? */
+ return;
+ }
+ else
+ {
+ TMP_MARK;
+ rsize = 2 * usize;
+ tp = TMP_ALLOC_LIMBS (rsize);
+
+ mpn_sqr (tp, up, usize);
+ cy_limb = tp[rsize - 1];
+ }
+ }
+ else
+ {
+ mp_srcptr up, vp;
+ mp_size_t usize, vsize;
+
+ usize = u->_mp_size;
+ vsize = v->_mp_size;
+ sign_product = usize ^ vsize;
+
+ usize = ABS (usize);
+ vsize = ABS (vsize);
+
+ up = u->_mp_d;
+ vp = v->_mp_d;
+ if (usize > prec)
+ {
+ up += usize - prec;
+ usize = prec;
+ }
+ if (vsize > prec)
+ {
+ vp += vsize - prec;
+ vsize = prec;
+ }
+
+ if (usize == 0 || vsize == 0)
+ {
+ r->_mp_size = 0;
+ r->_mp_exp = 0;
+ return;
+ }
+ else
+ {
+ TMP_MARK;
+ rsize = usize + vsize;
+ tp = TMP_ALLOC_LIMBS (rsize);
+ cy_limb = (usize >= vsize
+ ? mpn_mul (tp, up, usize, vp, vsize)
+ : mpn_mul (tp, vp, vsize, up, usize));
+
+ }
+ }
+
+ adj = cy_limb == 0;
+ rsize -= adj;
+ prec++;
+ if (rsize > prec)
+ {
+ tp += rsize - prec;
+ rsize = prec;
+ }
+ rp = r->_mp_d;
+ MPN_COPY (rp, tp, rsize);
+ r->_mp_exp = u->_mp_exp + v->_mp_exp - adj;
+ r->_mp_size = sign_product >= 0 ? rsize : -rsize;
+
+ TMP_FREE;
+}