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https://review.haiku-os.org/buildtools
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b58ddff026
* merged mpfr 3.0.0 and gmp 5.0.1 in buildtools trunk git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@37378 a95241bf-73f2-0310-859d-f6bbb57e9c96
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* mpfr_print_binary -- print the internal binary representation of a
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floating-point number
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Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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Contributed by the Arenaire and Cacao projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The GNU MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
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http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
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#include "mpfr-impl.h"
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void
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mpfr_fprint_binary (FILE *stream, mpfr_srcptr x)
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{
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if (MPFR_IS_NAN (x))
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{
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fprintf (stream, "@NaN@");
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return;
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}
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if (MPFR_SIGN (x) < 0)
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fprintf (stream, "-");
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if (MPFR_IS_INF (x))
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fprintf (stream, "@Inf@");
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else if (MPFR_IS_ZERO (x))
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fprintf (stream, "0");
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else
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{
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mp_limb_t *mx;
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mpfr_prec_t px;
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mp_size_t n;
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mx = MPFR_MANT (x);
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px = MPFR_PREC (x);
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fprintf (stream, "0.");
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for (n = (px - 1) / GMP_NUMB_BITS; ; n--)
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{
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mp_limb_t wd, t;
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MPFR_ASSERTN (n >= 0);
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wd = mx[n];
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for (t = MPFR_LIMB_HIGHBIT; t != 0; t >>= 1)
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{
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putc ((wd & t) == 0 ? '0' : '1', stream);
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if (--px == 0)
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{
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mpfr_exp_t ex;
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ex = MPFR_GET_EXP (x);
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MPFR_ASSERTN (ex >= LONG_MIN && ex <= LONG_MAX);
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fprintf (stream, "E%ld", (long) ex);
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return;
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}
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}
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}
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}
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}
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void
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mpfr_print_binary (mpfr_srcptr x)
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{
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mpfr_fprint_binary (stdout, x);
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}
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void
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mpfr_print_mant_binary(const char *str, const mp_limb_t *p, mpfr_prec_t r)
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{
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int i;
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mpfr_prec_t count = 0;
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char c;
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mp_size_t n = (r - 1) / GMP_NUMB_BITS + 1;
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printf("%s ", str);
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for(n-- ; n>=0 ; n--)
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{
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for(i = GMP_NUMB_BITS-1 ; i >=0 ; i--)
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{
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c = (p[n] & (((mp_limb_t)1L)<<i)) ? '1' : '0';
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putchar(c);
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count++;
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if (count == r)
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putchar('[');
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}
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putchar('.');
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}
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putchar('\n');
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}
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void
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mpfr_dump_mant (const mp_limb_t *p, mpfr_prec_t r, mpfr_prec_t precx,
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mpfr_prec_t error)
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{
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int i;
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mpfr_prec_t count = 0;
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char c;
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mp_size_t n = (r - 1) / GMP_NUMB_BITS + 1;
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for(n-- ; n>=0 ; n--)
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{
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for(i = GMP_NUMB_BITS-1 ; i >=0 ; i--)
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{
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c = (p[n] & (((mp_limb_t)1L)<<i)) ? '1' : '0';
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putchar(c);
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count++;
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if (count == precx)
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putchar (',');
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if (count == error)
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putchar('[');
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}
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putchar('.');
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}
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putchar('\n');
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}
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