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/* mpfr_set_str_binary -- set a floating-point number from a binary string
Copyright 1999-2020 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 "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);
}
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