1 /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001
2 Free Software Foundation, Inc.
3 Written by James Clark (jjc@jclark.com)
5 This file is part of groff.
7 groff is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License along
18 with groff; see the file COPYING. If not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
34 #define LONG_MAX 2147483647
38 #define LONG_MIN (-LONG_MAX-1)
42 #define ISASCII(c) isascii(c)
44 #define ISASCII(c) (1)
47 long strtol(str, ptr, base)
55 static char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
57 while (ISASCII((unsigned char)*str) && isspace((unsigned char)*str))
66 if (str[1] == 'x' || str[1] == 'X') {
76 if (base < 2 || base > 36)
78 else if (base == 16 && *str == '0' && (str[1] == 'x' || str[1] == 'X'))
81 p = strchr(digits, (ISASCII((unsigned char)*str)
82 && isupper((unsigned char)*str)
83 ? tolower((unsigned char)*str)
85 if (p == 0 || (val = (p - digits)) >= base) {
86 if (base == 16 && str > start && (str[-1] == 'x' || str[-1] == 'X')) {
100 while (*++str != '\0') {
103 p = strchr(digits, (ISASCII((unsigned char)*str)
104 && isupper((unsigned char)*str)
105 ? tolower((unsigned char)*str) : *str));
112 if (-(unsigned long)val > (-(unsigned long)LONG_MIN - n)/base) {
120 if (val > (LONG_MAX - n)/base) {