mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-15 10:17:40 +01:00
99d8158635
git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@29042 a95241bf-73f2-0310-859d-f6bbb57e9c96
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* mpfr_set_str_binary -- set a floating-point number from a binary string
|
|
|
|
Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
|
|
Contributed by the Arenaire and Cacao projects, INRIA.
|
|
|
|
This file is part of the MPFR Library.
|
|
|
|
The 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 2.1 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The 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 MPFR Library; see the file COPYING.LIB. If not, 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, GMP_RNDZ);
|
|
MPFR_ASSERTN (res == 0);
|
|
}
|