Annotation of OpenXM_contrib/gmp/mpf/inp_str.c, Revision 1.1.1.3
1.1 maekawa 1: /* mpf_inp_str(dest_float, stream, base) -- Input a number in base
2: BASE from stdio stream STREAM and store the result in DEST_FLOAT.
3:
1.1.1.3 ! ohara 4: Copyright 1996, 2000, 2001, 2002 Free Software Foundation, Inc.
1.1 maekawa 5:
6: This file is part of the GNU MP Library.
7:
8: The GNU MP Library is free software; you can redistribute it and/or modify
1.1.1.2 maekawa 9: it under the terms of the GNU Lesser General Public License as published by
10: the Free Software Foundation; either version 2.1 of the License, or (at your
1.1 maekawa 11: option) any later version.
12:
13: The GNU MP Library is distributed in the hope that it will be useful, but
14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
1.1.1.2 maekawa 15: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
1.1 maekawa 16: License for more details.
17:
1.1.1.2 maekawa 18: You should have received a copy of the GNU Lesser General Public License
1.1 maekawa 19: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21: MA 02111-1307, USA. */
22:
23: #include <stdio.h>
24: #include <ctype.h>
25: #include "gmp.h"
26: #include "gmp-impl.h"
27:
28: size_t
29: mpf_inp_str (mpf_ptr rop, FILE *stream, int base)
30: {
31: char *str;
32: size_t alloc_size, str_size;
33: int c;
34: size_t retval;
35: size_t nread;
36:
37: if (stream == 0)
38: stream = stdin;
39:
40: alloc_size = 100;
1.1.1.3 ! ohara 41: str = (char *) (*__gmp_allocate_func) (alloc_size);
1.1 maekawa 42: str_size = 0;
43: nread = 0;
44:
45: /* Skip whitespace. */
46: do
47: {
48: c = getc (stream);
49: nread++;
50: }
51: while (isspace (c));
52:
53: for (;;)
54: {
55: if (str_size >= alloc_size)
56: {
57: size_t old_alloc_size = alloc_size;
58: alloc_size = alloc_size * 3 / 2;
1.1.1.3 ! ohara 59: str = (char *) (*__gmp_reallocate_func) (str, old_alloc_size, alloc_size);
1.1 maekawa 60: }
61: if (c == EOF || isspace (c))
62: break;
63: str[str_size++] = c;
64: c = getc (stream);
65: }
66: ungetc (c, stream);
1.1.1.3 ! ohara 67: nread--;
1.1 maekawa 68:
69: if (str_size >= alloc_size)
70: {
71: size_t old_alloc_size = alloc_size;
72: alloc_size = alloc_size * 3 / 2;
1.1.1.3 ! ohara 73: str = (char *) (*__gmp_reallocate_func) (str, old_alloc_size, alloc_size);
1.1 maekawa 74: }
75: str[str_size] = 0;
76:
77: retval = mpf_set_str (rop, str, base);
1.1.1.3 ! ohara 78: (*__gmp_free_func) (str, alloc_size);
! 79:
1.1 maekawa 80: if (retval == -1)
81: return 0; /* error */
82:
83: return str_size + nread;
84: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>