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-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/fmma.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/fmma.c b/Build/source/libs/mpfr/mpfr-src/src/fmma.c
new file mode 100644
index 00000000000..6168c2af0f2
--- /dev/null
+++ b/Build/source/libs/mpfr/mpfr-src/src/fmma.c
@@ -0,0 +1,91 @@
+/* mpfr_fmma, mpfr_fmms -- Compute a*b +/- c*d
+
+Copyright 2014-2017 Free Software Foundation, Inc.
+Contributed by the AriC and Caramba projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR 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 MPFR 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 MPFR Library; see the file COPYING.LESSER. If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include "mpfr-impl.h"
+
+static int
+mpfr_fmma_aux (mpfr_ptr z, mpfr_srcptr a, mpfr_srcptr b, mpfr_srcptr c,
+ mpfr_srcptr d, mpfr_rnd_t rnd, int neg)
+{
+ mpfr_ubf_t u, v;
+ mpfr_t zz;
+ mpfr_prec_t prec_z = MPFR_PREC(z);
+ mp_size_t un, vn;
+ mpfr_limb_ptr up, vp, zp;
+ int inex;
+ MPFR_TMP_DECL(marker);
+
+ MPFR_LOG_FUNC
+ (("a[%Pu]=%.*Rg b[%Pu]=%.*Rg c[%Pu]=%.*Rg d[%Pu]=%.*Rg rnd=%d neg=%d",
+ mpfr_get_prec (a), mpfr_log_prec, a,
+ mpfr_get_prec (b), mpfr_log_prec, b,
+ mpfr_get_prec (c), mpfr_log_prec, c,
+ mpfr_get_prec (d), mpfr_log_prec, d, rnd, neg),
+ ("z[%Pu]=%.*Rg inex=%d",
+ mpfr_get_prec (z), mpfr_log_prec, z, inex));
+
+ MPFR_TMP_MARK (marker);
+
+ un = MPFR_LIMB_SIZE (a) + MPFR_LIMB_SIZE (b);
+ vn = MPFR_LIMB_SIZE (c) + MPFR_LIMB_SIZE (d);
+ MPFR_TMP_INIT (up, u, (mpfr_prec_t) un * GMP_NUMB_BITS, un);
+ MPFR_TMP_INIT (vp, v, (mpfr_prec_t) vn * GMP_NUMB_BITS, vn);
+
+ mpfr_ubf_mul_exact (u, a, b);
+ mpfr_ubf_mul_exact (v, c, d);
+ if (neg)
+ MPFR_CHANGE_SIGN (v);
+ if (prec_z == MPFR_PREC(a) && prec_z == MPFR_PREC(b) &&
+ prec_z == MPFR_PREC(c) && prec_z == MPFR_PREC(d) &&
+ un == MPFR_PREC2LIMBS(2 * prec_z))
+ {
+ MPFR_TMP_INIT (zp, zz, 2 * prec_z, un);
+ MPFR_PREC(u) = MPFR_PREC(v) = 2 * prec_z;
+ inex = mpfr_add (zz, (mpfr_srcptr) u, (mpfr_srcptr) v, rnd);
+ inex = mpfr_set_1_2 (z, zz, rnd, inex);
+ }
+ else
+ inex = mpfr_add (z, (mpfr_srcptr) u, (mpfr_srcptr) v, rnd);
+
+ MPFR_UBF_CLEAR_EXP (u);
+ MPFR_UBF_CLEAR_EXP (v);
+
+ MPFR_TMP_FREE (marker);
+
+ return inex;
+}
+
+/* z <- a*b + c*d */
+int
+mpfr_fmma (mpfr_ptr z, mpfr_srcptr a, mpfr_srcptr b, mpfr_srcptr c,
+ mpfr_srcptr d, mpfr_rnd_t rnd)
+{
+ return mpfr_fmma_aux (z, a, b, c, d, rnd, 0);
+}
+
+/* z <- a*b - c*d */
+int
+mpfr_fmms (mpfr_ptr z, mpfr_srcptr a, mpfr_srcptr b, mpfr_srcptr c,
+ mpfr_srcptr d, mpfr_rnd_t rnd)
+{
+ return mpfr_fmma_aux (z, a, b, c, d, rnd, 1);
+}