1 /* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If
17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
18 Cambridge, MA 02139, USA. */
25 # define USE_NUMBER_GROUPING
42 #ifdef USE_NUMBER_GROUPING
43 # include "../locale/localeinfo.h"
46 /* Nonzero if we are defining `strtoul' or `strtouq', operating on
52 # define strtol strtoul
53 # define INT unsigned LONG int
56 /* If QUAD is defined, we are defining `strtoq' or `strtouq',
57 operating on `long long int's. */
60 # define strtoul strtouq
62 # define strtol strtoq
64 # define LONG long long
66 # define LONG_MIN LONG_LONG_MIN
68 # define LONG_MAX LONG_LONG_MAX
70 # define ULONG_MAX ULONG_LONG_MAX
71 # if __GNUC__ == 2 && __GNUC_MINOR__ < 7
72 /* Work around gcc bug with using this constant. */
73 static const unsigned long long int maxquad = ULONG_LONG_MAX;
75 # define ULONG_MAX maxquad
82 # define INTERNAL(x) INTERNAL1(x)
83 # define INTERNAL1(x) __##x##_internal
85 # define INTERNAL(x) __/**/x/**/_internal
88 #ifdef USE_NUMBER_GROUPING
89 /* This file defines a function to check for correct grouping. */
90 # include "grouping.h"
94 /* Convert NPTR to an `unsigned long int' or `long int' in base BASE.
95 If BASE is 0 the base is determined by the presence of a leading
96 zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
97 If BASE is < 2 or > 36, it is reset to 10.
98 If ENDPTR is not NULL, a pointer to the character after the last
99 one converted is stored in *ENDPTR. */
102 INTERNAL (strtol) (nptr, endptr, base, group)
109 register unsigned LONG int cutoff;
110 register unsigned int cutlim;
111 register unsigned LONG int i;
112 register const char *s;
113 register unsigned char c;
114 const char *save, *end;
117 #ifdef USE_NUMBER_GROUPING
118 /* The thousands character of the current locale. */
120 /* The numeric grouping specification of the current locale,
121 in the format described in <locale.h>. */
122 const char *grouping;
126 grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
127 if (*grouping <= 0 || *grouping == CHAR_MAX)
131 /* Figure out the thousands separator character. */
132 if (mbtowc (&thousands, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
133 strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
134 thousands = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
135 if (thousands == L'\0')
143 if (base < 0 || base == 1 || base > 36)
148 /* Skip white space. */
154 /* Check for a sign. */
168 if (base == 16 && s[0] == '0' && toupper (s[1]) == 'X')
171 /* If BASE is zero, figure it out ourselves. */
175 if (toupper (s[1]) == 'X')
186 /* Save the pointer so we can check later if anything happened. */
189 #ifdef USE_NUMBER_GROUPING
192 /* Find the end of the digit string and check its grouping. */
194 for (c = *end; c != '\0'; c = *++end)
195 if (c != thousands && !isdigit (c) &&
196 (!isalpha (c) || toupper (c) - 'A' + 10 >= base))
201 end = correctly_grouped_prefix (s, end, thousands, grouping);
207 cutoff = ULONG_MAX / (unsigned LONG int) base;
208 cutlim = ULONG_MAX % (unsigned LONG int) base;
212 for (c = *s; c != '\0'; c = *++s)
218 else if (isalpha (c))
219 c = toupper (c) - 'A' + 10;
224 /* Check for overflow. */
225 if (i > cutoff || (i == cutoff && c > cutlim))
229 i *= (unsigned LONG int) base;
234 /* Check if anything actually happened. */
238 /* Store in ENDPTR the address of one character
239 past the last character we converted. */
241 *endptr = (char *) s;
244 /* Check for a value that is within the range of
245 `unsigned LONG int', but outside the range of `LONG int'. */
247 -(unsigned LONG int) LONG_MIN : (unsigned LONG int) LONG_MAX))
257 return negative ? LONG_MIN : LONG_MAX;
261 /* Return the result of the appropriate sign. */
262 return (negative ? -i : i);
265 /* There was no number to convert. */
267 *endptr = (char *) nptr;
271 /* External user entry point. */
278 strtol (nptr, endptr, base)
283 return INTERNAL (strtol) (nptr, endptr, base, 0);