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-rw-r--r--Build/source/libs/mpfr/mpfr-3.1.2/src/get_uj.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-3.1.2/src/get_uj.c b/Build/source/libs/mpfr/mpfr-3.1.2/src/get_uj.c
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index 00000000000..4f085b41429
--- /dev/null
+++ b/Build/source/libs/mpfr/mpfr-3.1.2/src/get_uj.c
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+/* mpfr_get_uj -- convert a MPFR number to a huge machine unsigned integer
+
+Copyright 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
+Contributed by the AriC and Caramel 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. */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h" /* for a build within gmp */
+#endif
+
+#include "mpfr-intmax.h"
+#include "mpfr-impl.h"
+
+#ifdef _MPFR_H_HAVE_INTMAX_T
+
+uintmax_t
+mpfr_get_uj (mpfr_srcptr f, mpfr_rnd_t rnd)
+{
+ uintmax_t r;
+ mpfr_prec_t prec;
+ mpfr_t x;
+
+ if (MPFR_UNLIKELY (!mpfr_fits_uintmax_p (f, rnd)))
+ {
+ MPFR_SET_ERANGE ();
+ return MPFR_IS_NAN (f) || MPFR_IS_NEG (f) ?
+ (uintmax_t) 0 : MPFR_UINTMAX_MAX;
+ }
+
+ if (MPFR_IS_ZERO (f))
+ return (uintmax_t) 0;
+
+ /* determine the precision of uintmax_t */
+ for (r = MPFR_UINTMAX_MAX, prec = 0; r != 0; r /= 2, prec++)
+ { }
+
+ /* Now, r = 0. */
+
+ mpfr_init2 (x, prec);
+ mpfr_rint (x, f, rnd);
+ MPFR_ASSERTN (MPFR_IS_FP (x));
+
+ if (MPFR_NOTZERO (x))
+ {
+ mp_limb_t *xp;
+ int sh, n; /* An int should be sufficient in this context. */
+
+ MPFR_ASSERTN (MPFR_IS_POS (x));
+ xp = MPFR_MANT (x);
+ sh = MPFR_GET_EXP (x);
+ MPFR_ASSERTN ((mpfr_prec_t) sh <= prec);
+ for (n = MPFR_LIMB_SIZE(x) - 1; n >= 0; n--)
+ {
+ sh -= GMP_NUMB_BITS;
+ r += (sh >= 0
+ ? (uintmax_t) xp[n] << sh
+ : (uintmax_t) xp[n] >> (- sh));
+ }
+ }
+
+ mpfr_clear (x);
+
+ return r;
+}
+
+#endif