version 1.1.1.1, 2000/09/09 14:12:19 |
version 1.1.1.2, 2003/08/25 16:06:07 |
|
|
/* mpfr_print_raw -- print the internal binary representation of a |
/* mpfr_print_binary -- print the internal binary representation of a |
floating-point number |
floating-point number |
|
|
Copyright (C) 1999 PolKA project, Inria Lorraine and Loria |
Copyright 1999, 2000, 2001 Free Software Foundation, Inc. |
|
|
This file is part of the MPFR Library. |
This file is part of the MPFR Library. |
|
|
The MPFR Library is free software; you can redistribute it and/or modify |
The MPFR Library is free software; you can redistribute it and/or modify |
it under the terms of the GNU Library General Public License as published by |
it under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
option) any later version. |
option) any later version. |
|
|
The MPFR Library is distributed in the hope that it will be useful, but |
The MPFR Library is distributed in the hope that it will be useful, but |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
License for more details. |
License for more details. |
|
|
You should have received a copy of the GNU Library General Public License |
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 |
along with the MPFR Library; see the file COPYING.LIB. If not, write to |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
Line 24 MA 02111-1307, USA. */ |
|
Line 24 MA 02111-1307, USA. */ |
|
#include "gmp.h" |
#include "gmp.h" |
#include "gmp-impl.h" |
#include "gmp-impl.h" |
#include "mpfr.h" |
#include "mpfr.h" |
|
#include "mpfr-impl.h" |
|
|
void |
static void mpfr_get_str_raw _PROTO ((char *, mpfr_srcptr)); |
#if __STDC__ |
|
mpfr_get_str_raw(char *digit_ptr, mpfr_srcptr x) |
static void |
#else |
mpfr_get_str_raw (char *digit_ptr, mpfr_srcptr x) |
mpfr_get_str_raw(digit_ptr, x) |
|
char *digit_ptr; |
|
mpfr_srcptr x; |
|
#endif |
|
{ |
{ |
mp_limb_t *mx, wd, t; long ex, sx, k, l, p; |
mp_limb_t *mx, wd, t; long ex, sx, k, l, p; |
|
|
mx = MANT(x); |
mx = MPFR_MANT(x); |
ex = EXP(x); |
ex = MPFR_EXP(x); |
p = PREC(x); |
p = MPFR_PREC(x); |
|
|
if (SIGN(x) < 0) { *digit_ptr = '-'; digit_ptr++; } |
if (MPFR_SIGN(x) < 0) { *digit_ptr = '-'; digit_ptr++; } |
sprintf(digit_ptr, "0."); digit_ptr += 2; |
sprintf(digit_ptr, "0."); digit_ptr += 2; |
|
|
sx = 1+(p-1)/mp_bits_per_limb; /* number of significant limbs */ |
sx = 1+(p-1)/BITS_PER_MP_LIMB; /* number of significant limbs */ |
for (k = sx - 1; k >= 0 ; k--) |
for (k = sx - 1; k >= 0 ; k--) |
{ |
{ |
wd = mx[k]; |
wd = mx[k]; |
t = ((mp_limb_t)1) << (BITS_PER_MP_LIMB - 1); |
t = GMP_LIMB_HIGHBIT; |
for (l = BITS_PER_MP_LIMB - 1; l>=0; l--) |
for (l = BITS_PER_MP_LIMB - 1; l>=0; l--) |
{ |
{ |
if (wd & t) |
if (wd & t) |
Line 62 mpfr_get_str_raw(digit_ptr, x) |
|
Line 59 mpfr_get_str_raw(digit_ptr, x) |
|
} |
} |
|
|
void |
void |
#if __STDC__ |
mpfr_print_binary (mpfr_srcptr x) |
mpfr_print_raw(mpfr_srcptr x) |
|
#else |
|
mpfr_print_raw(x) |
|
mpfr_srcptr x; |
|
#endif |
|
{ |
{ |
char *str; |
char *str; |
|
unsigned long alloc_size; |
|
|
if (FLAG_NAN(x)) printf("NaN"); |
if (MPFR_IS_NAN(x)) printf("NaN"); |
else if (!NOTZERO(x)) printf("0"); |
else if (MPFR_IS_INF(x)) { |
|
if (MPFR_SIGN(x) == 1) { printf("Inf"); } else printf("-Inf"); |
|
} |
|
else if (!MPFR_NOTZERO(x)) { |
|
if (MPFR_SIGN(x) < 0) printf("-"); |
|
printf("0"); |
|
} |
else { |
else { |
/* 3 char for sign + 0 + binary point |
/* 3 char for sign + 0 + binary point |
+ ABSSIZE(x) * BITS_PER_MP_LIMB for mantissa |
+ MPFR_ABSSIZE(x) * BITS_PER_MP_LIMB for mantissa |
+ 2 for brackets in mantissa |
+ 2 for brackets in mantissa |
+ 1 for 'E' |
+ 1 for 'E' |
+ 11 for exponent (including sign) |
+ 11 for exponent (including sign) |
= 17 + ABSSIZE(x) * BITS_PER_MP_LIMB |
= 17 + MPFR_ABSSIZE(x) * BITS_PER_MP_LIMB |
*/ |
*/ |
str = (char *) malloc((17 + ABSSIZE(x) * BITS_PER_MP_LIMB)*sizeof(char)); |
alloc_size = 17 + MPFR_ABSSIZE(x) * BITS_PER_MP_LIMB; |
|
str = (char *) (*__gmp_allocate_func) (alloc_size * sizeof(char)); |
mpfr_get_str_raw(str, x); |
mpfr_get_str_raw(str, x); |
|
|
printf("%s", str); |
printf("%s", str); |
free(str); |
(*__gmp_free_func) (str, alloc_size * sizeof(char)); |
} |
} |
} |
} |
|
|