diff options
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/set_str_raw.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/set_str_raw.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/set_str_raw.c b/Build/source/libs/mpfr/mpfr-src/src/set_str_raw.c new file mode 100644 index 00000000000..f7e1167adab --- /dev/null +++ b/Build/source/libs/mpfr/mpfr-src/src/set_str_raw.c @@ -0,0 +1,55 @@ +/* mpfr_set_str_binary -- set a floating-point number from a binary string + +Copyright 1999-2015 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. */ + +#include "mpfr-impl.h" + +/* Currently the number should be of the form +/- xxxx.xxxxxxEyy, with + decimal exponent. The mantissa of x is supposed to be large enough + to hold all the bits of str. */ + +void +mpfr_set_str_binary (mpfr_ptr x, const char *str) +{ + int has_sign; + int res; + + if (*str == 'N') + { + MPFR_SET_NAN(x); + __gmpfr_flags |= MPFR_FLAGS_NAN; + return; + } + + has_sign = *str == '-' || *str == '+'; + if (str[has_sign] == 'I') + { + MPFR_SET_INF(x); + if (*str == '-') + MPFR_SET_NEG(x); + else + MPFR_SET_POS(x); + return; + } + + res = mpfr_strtofr (x, str, 0, 2, MPFR_RNDZ); + MPFR_ASSERTN (res == 0); +} |