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/* Convert string representation of a number into an integer value.
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Copyright (C) 1991, 92, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
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NOTE: The canonical source of this file is maintained with the GNU C
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Library. Bugs can be reported to bug-glibc@gnu.org.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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# define USE_NUMBER_GROUPING
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# define HAVE_LIMITS_H
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# define __set_errno(Val) errno = (Val)
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#ifdef USE_NUMBER_GROUPING
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# include "../locale/localeinfo.h"
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/* Nonzero if we are defining `strtoul' or `strtoull', operating on
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# define INT unsigned LONG int
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/* Determine the name. */
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define strtol __wcstoull_l
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# define strtol __wcstoul_l
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# define strtol __strtoull_l
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# define strtol __strtoul_l
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# define strtol __wcstoll_l
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# define strtol __wcstol_l
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# define strtol __strtoll_l
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# define strtol __strtol_l
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# define strtol wcstoull
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# define strtol wcstoul
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# define strtol strtoull
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# define strtol strtoul
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# ifdef USE_WIDE_CHAR
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# define strtol wcstoll
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# define strtol wcstol
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# define strtol strtoll
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/* If QUAD is defined, we are defining `strtoll' or `strtoull',
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operating on `long long int's. */
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# define LONG long long
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# define STRTOL_LONG_MIN LONG_LONG_MIN
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# define STRTOL_LONG_MAX LONG_LONG_MAX
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# define STRTOL_ULONG_MAX ULONG_LONG_MAX
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/* The extra casts work around common compiler bugs,
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e.g. Cray C 5.0.3.0 when t == time_t. */
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# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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# ifndef TYPE_MINIMUM
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# define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
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? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
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# ifndef TYPE_MAXIMUM
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# define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
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# ifndef ULONG_LONG_MAX
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# define ULONG_LONG_MAX TYPE_MAXIMUM (unsigned long long)
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# ifndef LONG_LONG_MAX
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# define LONG_LONG_MAX TYPE_MAXIMUM (long long int)
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# ifndef LONG_LONG_MIN
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# define LONG_LONG_MIN TYPE_MINIMUM (long long int)
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# if __GNUC__ == 2 && __GNUC_MINOR__ < 7
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/* Work around gcc bug with using this constant. */
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static const unsigned long long int maxquad = ULONG_LONG_MAX;
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# undef STRTOL_ULONG_MAX
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# define STRTOL_ULONG_MAX maxquad
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# define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
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# define LONG_MAX ((long int) (ULONG_MAX >> 1))
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# define STRTOL_LONG_MIN LONG_MIN
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# define STRTOL_LONG_MAX LONG_MAX
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# define STRTOL_ULONG_MAX ULONG_MAX
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/* We use this code also for the extended locale handling where the
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function gets as an additional argument the locale which has to be
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used. To access the values we have to redefine the _NL_CURRENT
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define _NL_CURRENT(category, item) \
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(current->values[_NL_ITEM_INDEX (item)].string)
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# define LOCALE_PARAM , loc
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# define LOCALE_PARAM_DECL __locale_t loc;
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# define LOCALE_PARAM
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# define LOCALE_PARAM_DECL
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#if defined _LIBC || defined HAVE_WCHAR_H
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# define L_(Ch) L##Ch
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# define UCHAR_TYPE wint_t
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# define STRING_TYPE wchar_t
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define ISSPACE(Ch) __iswspace_l ((Ch), loc)
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# define ISALPHA(Ch) __iswalpha_l ((Ch), loc)
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# define TOUPPER(Ch) __towupper_l ((Ch), loc)
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# define ISSPACE(Ch) iswspace (Ch)
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# define ISALPHA(Ch) iswalpha (Ch)
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# define TOUPPER(Ch) towupper (Ch)
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# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
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# define IN_CTYPE_DOMAIN(c) 1
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# define IN_CTYPE_DOMAIN(c) isascii(c)
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# define UCHAR_TYPE unsigned char
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# define STRING_TYPE char
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define ISSPACE(Ch) __isspace_l ((Ch), loc)
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# define ISALPHA(Ch) __isalpha_l ((Ch), loc)
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# define TOUPPER(Ch) __toupper_l ((Ch), loc)
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# define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch))
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# define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
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# define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch))
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/* For compilers which are ansi but don't define __STDC__, like SGI
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Irix-4.0.5 cc, also check whether PROTOTYPES is defined. */
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#if defined (__STDC__) || defined (PROTOTYPES)
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# define INTERNAL(X) INTERNAL1(X)
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# define INTERNAL1(X) __##X##_internal
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# define WEAKNAME(X) WEAKNAME1(X)
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# define INTERNAL(X) __/**/X/**/_internal
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#ifdef USE_NUMBER_GROUPING
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/* This file defines a function to check for correct grouping. */
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# include "grouping.h"
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/* Convert NPTR to an `unsigned long int' or `long int' in base BASE.
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If BASE is 0 the base is determined by the presence of a leading
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zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
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If BASE is < 2 or > 36, it is reset to 10.
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If ENDPTR is not NULL, a pointer to the character after the last
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one converted is stored in *ENDPTR. */
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INTERNAL (strtol) (nptr, endptr, base, group LOCALE_PARAM)
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const STRING_TYPE *nptr;
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STRING_TYPE **endptr;
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register unsigned LONG int cutoff;
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register unsigned int cutlim;
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register unsigned LONG int i;
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register const STRING_TYPE *s;
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register UCHAR_TYPE c;
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const STRING_TYPE *save, *end;
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#ifdef USE_NUMBER_GROUPING
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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struct locale_data *current = loc->__locales[LC_NUMERIC];
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/* The thousands character of the current locale. */
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wchar_t thousands = L'\0';
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/* The numeric grouping specification of the current locale,
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in the format described in <locale.h>. */
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const char *grouping;
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grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
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if (*grouping <= 0 || *grouping == CHAR_MAX)
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/* Figure out the thousands separator character. */
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# if defined _LIBC || defined _HAVE_BTOWC
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thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
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if (thousands == WEOF)
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if (thousands == L'\0')
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if (base < 0 || base == 1 || base > 36)
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__set_errno (EINVAL);
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/* Skip white space. */
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/* Check for a sign. */
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else if (*s == L_('+'))
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/* Recognize number prefix and if BASE is zero, figure it out ourselves. */
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if ((base == 0 || base == 16) && TOUPPER (s[1]) == L_('X'))
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/* Save the pointer so we can check later if anything happened. */
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#ifdef USE_NUMBER_GROUPING
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/* Find the end of the digit string and check its grouping. */
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for (c = *end; c != L_('\0'); c = *++end)
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if ((wchar_t) c != thousands
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&& ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
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&& (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
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end = correctly_grouped_prefix (s, end, thousands, grouping);
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cutoff = STRTOL_ULONG_MAX / (unsigned LONG int) base;
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cutlim = STRTOL_ULONG_MAX % (unsigned LONG int) base;
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for (c = *s; c != L_('\0'); c = *++s)
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if (c >= L_('0') && c <= L_('9'))
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else if (ISALPHA (c))
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c = TOUPPER (c) - L_('A') + 10;
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/* Check for overflow. */
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if (i > cutoff || (i == cutoff && c > cutlim))
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i *= (unsigned LONG int) base;
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/* Check if anything actually happened. */
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/* Store in ENDPTR the address of one character
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past the last character we converted. */
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*endptr = (STRING_TYPE *) s;
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/* Check for a value that is within the range of
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`unsigned LONG int', but outside the range of `LONG int'. */
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? -((unsigned LONG int) (STRTOL_LONG_MIN + 1)) + 1
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: (unsigned LONG int) STRTOL_LONG_MAX))
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__set_errno (ERANGE);
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return STRTOL_ULONG_MAX;
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return negative ? STRTOL_LONG_MIN : STRTOL_LONG_MAX;
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/* Return the result of the appropriate sign. */
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return negative ? -i : i;
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/* We must handle a special case here: the base is 0 or 16 and the
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first two characters are '0' and 'x', but the rest are no
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hexadecimal digits. This is no error case. We return 0 and
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ENDPTR points to the `x`. */
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if (save - nptr >= 2 && TOUPPER (save[-1]) == L_('X')
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&& save[-2] == L_('0'))
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*endptr = (STRING_TYPE *) &save[-1];
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/* There was no number to convert. */
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*endptr = (STRING_TYPE *) nptr;
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/* External user entry point. */
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# if defined (__STDC__) && __STDC__
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# define PARAMS(Args) Args
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# define PARAMS(Args) ()
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INT strtol PARAMS ((const STRING_TYPE *nptr, STRING_TYPE **endptr, int base));
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strtol (nptr, endptr, base LOCALE_PARAM)
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const STRING_TYPE *nptr;
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STRING_TYPE **endptr;
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return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM);
added
removed
lib/strtol.c
