diff options
Diffstat (limited to 'ruby_1_8_6/missing/strtoul.c')
| -rw-r--r-- | ruby_1_8_6/missing/strtoul.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/ruby_1_8_6/missing/strtoul.c b/ruby_1_8_6/missing/strtoul.c deleted file mode 100644 index f16f2ad9cf..0000000000 --- a/ruby_1_8_6/missing/strtoul.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * strtoul.c -- - * - * Source code for the "strtoul" library procedure. - * - * Copyright 1988 Regents of the University of California - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies. The University of California - * makes no representations about the suitability of this - * software for any purpose. It is provided "as is" without - * express or implied warranty. - */ - -#include <ctype.h> - -/* - * The table below is used to convert from ASCII digits to a - * numerical equivalent. It maps from '0' through 'z' to integers - * (100 for non-digit characters). - */ - -static char cvtIn[] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, /* '0' - '9' */ - 100, 100, 100, 100, 100, 100, 100, /* punctuation */ - 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 'A' - 'Z' */ - 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, - 30, 31, 32, 33, 34, 35, - 100, 100, 100, 100, 100, 100, /* punctuation */ - 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 'a' - 'z' */ - 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, - 30, 31, 32, 33, 34, 35}; - -/* - *---------------------------------------------------------------------- - * - * strtoul -- - * - * Convert an ASCII string into an integer. - * - * Results: - * The return value is the integer equivalent of string. If endPtr - * is non-NULL, then *endPtr is filled in with the character - * after the last one that was part of the integer. If string - * doesn't contain a valid integer value, then zero is returned - * and *endPtr is set to string. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -unsigned long int -strtoul(string, endPtr, base) - char *string; /* String of ASCII digits, possibly - * preceded by white space. For bases - * greater than 10, either lower- or - * upper-case digits may be used. - */ - char **endPtr; /* Where to store address of terminating - * character, or NULL. */ - int base; /* Base for conversion. Must be less - * than 37. If 0, then the base is chosen - * from the leading characters of string: - * "0x" means hex, "0" means octal, anything - * else means decimal. - */ -{ - register char *p; - register unsigned long int result = 0; - register unsigned digit; - int anyDigits = 0; - - /* - * Skip any leading blanks. - */ - - p = string; - while (isspace(*p)) { - p += 1; - } - - /* - * If no base was provided, pick one from the leading characters - * of the string. - */ - - if (base == 0) - { - if (*p == '0') { - p += 1; - if (*p == 'x') { - p += 1; - base = 16; - } else { - - /* - * Must set anyDigits here, otherwise "0" produces a - * "no digits" error. - */ - - anyDigits = 1; - base = 8; - } - } - else base = 10; - } else if (base == 16) { - - /* - * Skip a leading "0x" from hex numbers. - */ - - if ((p[0] == '0') && (p[1] == 'x')) { - p += 2; - } - } - - /* - * Sorry this code is so messy, but speed seems important. Do - * different things for base 8, 10, 16, and other. - */ - - if (base == 8) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > 7) { - break; - } - result = (result << 3) + digit; - anyDigits = 1; - } - } else if (base == 10) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > 9) { - break; - } - result = (10*result) + digit; - anyDigits = 1; - } - } else if (base == 16) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > ('z' - '0')) { - break; - } - digit = cvtIn[digit]; - if (digit > 15) { - break; - } - result = (result << 4) + digit; - anyDigits = 1; - } - } else { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > ('z' - '0')) { - break; - } - digit = cvtIn[digit]; - if (digit >= base) { - break; - } - result = result*base + digit; - anyDigits = 1; - } - } - - /* - * See if there were any digits at all. - */ - - if (!anyDigits) { - p = string; - } - - if (endPtr != 0) { - *endPtr = p; - } - - return result; -} |