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/* mpfr_print_binary -- print the internal binary representation of a
floating-point number
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"
void
mpfr_fprint_binary (FILE *stream, mpfr_srcptr x)
{
if (MPFR_IS_NAN (x))
{
fprintf (stream, "@NaN@");
return;
}
if (MPFR_IS_NEG (x))
fprintf (stream, "-");
if (MPFR_IS_INF (x))
fprintf (stream, "@Inf@");
else if (MPFR_IS_ZERO (x))
fprintf (stream, "0");
else
{
mp_limb_t *mx;
mpfr_prec_t px;
mp_size_t n;
mx = MPFR_MANT (x);
px = MPFR_PREC (x);
fprintf (stream, "0.");
for (n = (px - 1) / GMP_NUMB_BITS; ; n--)
{
mp_limb_t wd, t;
MPFR_ASSERTN (n >= 0);
wd = mx[n];
for (t = MPFR_LIMB_HIGHBIT; t != 0; t >>= 1)
{
putc ((wd & t) == 0 ? '0' : '1', stream);
if (--px == 0)
{
mpfr_exp_t ex;
ex = MPFR_GET_EXP (x);
MPFR_ASSERTN (ex >= LONG_MIN && ex <= LONG_MAX);
fprintf (stream, "E%ld", (long) ex);
return;
}
}
}
}
}
void
mpfr_print_binary (mpfr_srcptr x)
{
mpfr_fprint_binary (stdout, x);
}
void
mpfr_print_mant_binary(const char *str, const mp_limb_t *p, mpfr_prec_t r)
{
int i;
mpfr_prec_t count = 0;
char c;
mp_size_t n = MPFR_PREC2LIMBS (r);
printf("%s ", str);
for(n-- ; n>=0 ; n--)
{
for(i = GMP_NUMB_BITS-1 ; i >=0 ; i--)
{
c = (p[n] & (MPFR_LIMB_ONE << i)) ? '1' : '0';
putchar(c);
count++;
if (count == r)
putchar('[');
}
putchar('.');
}
putchar('\n');
}
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