version 1.1.1.2, 2000/09/09 14:12:53 |
version 1.1.1.3, 2003/08/25 16:06:33 |
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/* mpz_inp_str(dest_integer, stream, base) -- Input a number in base |
/* mpz_inp_str(dest_integer, stream, base) -- Input a number in base |
BASE from stdio stream STREAM and store the result in DEST_INTEGER. |
BASE from stdio stream STREAM and store the result in DEST_INTEGER. |
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Copyright (C) 1991, 1993, 1994, 1996, 1998, 2000 Free Software Foundation, Inc. |
OF THE FUNCTIONS IN THIS FILE, ONLY mpz_inp_str IS FOR EXTERNAL USE, THE |
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REST ARE INTERNALS AND ARE ALMOST CERTAIN TO BE SUBJECT TO INCOMPATIBLE |
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CHANGES OR DISAPPEAR COMPLETELY IN FUTURE GNU MP RELEASES. |
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Copyright 1991, 1993, 1994, 1996, 1998, 2000, 2001, 2002 Free Software |
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Foundation, Inc. |
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This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
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The GNU MP Library is free software; you can redistribute it and/or modify |
The GNU MP Library is free software; you can redistribute it and/or modify |
Line 26 MA 02111-1307, USA. */ |
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Line 31 MA 02111-1307, USA. */ |
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#include "gmp-impl.h" |
#include "gmp-impl.h" |
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static int |
static int |
#if __STDC__ |
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digit_value_in_base (int c, int base) |
digit_value_in_base (int c, int base) |
#else |
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digit_value_in_base (c, base) |
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int c; |
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int base; |
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#endif |
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{ |
{ |
int digit; |
int digit; |
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Line 51 digit_value_in_base (c, base) |
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Line 50 digit_value_in_base (c, base) |
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} |
} |
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size_t |
size_t |
#if __STDC__ |
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mpz_inp_str (mpz_ptr x, FILE *stream, int base) |
mpz_inp_str (mpz_ptr x, FILE *stream, int base) |
#else |
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mpz_inp_str (x, stream, base) |
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mpz_ptr x; |
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FILE *stream; |
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int base; |
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#endif |
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{ |
{ |
char *str; |
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size_t alloc_size, str_size; |
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int c; |
int c; |
int negative; |
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mp_size_t xsize; |
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size_t nread; |
size_t nread; |
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if (stream == 0) |
if (stream == 0) |
Line 80 mpz_inp_str (x, stream, base) |
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Line 68 mpz_inp_str (x, stream, base) |
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} |
} |
while (isspace (c)); |
while (isspace (c)); |
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return mpz_inp_str_nowhite (x, stream, base, c, nread); |
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} |
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/* shared by mpq_inp_str */ |
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size_t |
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mpz_inp_str_nowhite (mpz_ptr x, FILE *stream, int base, int c, size_t nread) |
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{ |
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char *str; |
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size_t alloc_size, str_size; |
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int negative; |
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mp_size_t xsize; |
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negative = 0; |
negative = 0; |
if (c == '-') |
if (c == '-') |
{ |
{ |
Line 124 mpz_inp_str (x, stream, base) |
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Line 124 mpz_inp_str (x, stream, base) |
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} |
} |
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alloc_size = 100; |
alloc_size = 100; |
str = (char *) (*_mp_allocate_func) (alloc_size); |
str = (char *) (*__gmp_allocate_func) (alloc_size); |
str_size = 0; |
str_size = 0; |
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for (;;) |
for (;;) |
Line 134 mpz_inp_str (x, stream, base) |
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Line 134 mpz_inp_str (x, stream, base) |
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{ |
{ |
size_t old_alloc_size = alloc_size; |
size_t old_alloc_size = alloc_size; |
alloc_size = alloc_size * 3 / 2; |
alloc_size = alloc_size * 3 / 2; |
str = (char *) (*_mp_reallocate_func) (str, old_alloc_size, alloc_size); |
str = (char *) (*__gmp_reallocate_func) (str, old_alloc_size, alloc_size); |
} |
} |
dig = digit_value_in_base (c, base); |
dig = digit_value_in_base (c, base); |
if (dig < 0) |
if (dig < 0) |
Line 142 mpz_inp_str (x, stream, base) |
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Line 142 mpz_inp_str (x, stream, base) |
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str[str_size++] = dig; |
str[str_size++] = dig; |
c = getc (stream); |
c = getc (stream); |
} |
} |
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nread += str_size; |
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ungetc (c, stream); |
ungetc (c, stream); |
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nread--; |
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/* Make sure the string is not empty, mpn_set_str would fail. */ |
/* Make sure the string is not empty, mpn_set_str would fail. */ |
if (str_size == 0) |
if (str_size == 0) |
{ |
{ |
x->_mp_size = 0; |
x->_mp_size = 0; |
(*_mp_free_func) (str, alloc_size); |
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return nread; |
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} |
} |
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else |
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{ |
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xsize = (((mp_size_t) |
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(str_size / __mp_bases[base].chars_per_bit_exactly)) |
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/ GMP_NUMB_BITS + 2); |
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if (x->_mp_alloc < xsize) |
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_mpz_realloc (x, xsize); |
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xsize = (((mp_size_t) (str_size / __mp_bases[base].chars_per_bit_exactly)) |
/* Convert the byte array in base BASE to our bignum format. */ |
/ BITS_PER_MP_LIMB + 2); |
xsize = mpn_set_str (x->_mp_d, (unsigned char *) str, str_size, base); |
if (x->_mp_alloc < xsize) |
x->_mp_size = negative ? -xsize : xsize; |
_mpz_realloc (x, xsize); |
} |
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(*__gmp_free_func) (str, alloc_size); |
/* Convert the byte array in base BASE to our bignum format. */ |
return nread; |
xsize = mpn_set_str (x->_mp_d, (unsigned char *) str, str_size, base); |
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x->_mp_size = negative ? -xsize : xsize; |
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(*_mp_free_func) (str, alloc_size); |
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return str_size + nread; |
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} |
} |