1 files changed, 53 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/cmp_ld.c b/Build/source/libs/mpfr/mpfr-src/src/cmp_ld.c
new file mode 100644
index 00000000000..b94979b0daa
--- /dev/null
+++ b/Build/source/libs/mpfr/mpfr-src/src/cmp_ld.c
@@ -0,0 +1,53 @@
+/* mpfr_cmp_d -- compare a floating-point number with a long double
+
+Copyright 2004, 2006-2020 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
+https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include <float.h> /* needed so that MPFR_LDBL_MANT_DIG is correctly defined */
+
+#include "mpfr-impl.h"
+
+int
+mpfr_cmp_ld (mpfr_srcptr b, long double d)
+{
+  mpfr_t tmp;
+  int res;
+  MPFR_SAVE_EXPO_DECL (expo);
+
+  MPFR_SAVE_EXPO_MARK (expo);
+
+#if !HAVE_LDOUBLE_MAYBE_DOUBLE_DOUBLE
+  mpfr_init2 (tmp, MPFR_LDBL_MANT_DIG);
+#else
+  /* since the smallest value is 2^(-1074) and the largest is < 2^1024,
+     every double-double is exactly representable with 1024 + 1074 bits */
+  mpfr_init2 (tmp, 1024 + 1074);
+#endif
+  res = mpfr_set_ld (tmp, d, MPFR_RNDN);
+  MPFR_ASSERTD (res == 0);
+
+  MPFR_CLEAR_FLAGS ();
+  res = mpfr_cmp (b, tmp);
+  MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags);
+
+  mpfr_clear (tmp);
+  MPFR_SAVE_EXPO_FREE (expo);
+  return res;
+}