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Diffstat (limited to 'compat/strtoull.c')
| -rw-r--r-- | compat/strtoull.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/compat/strtoull.c b/compat/strtoull.c deleted file mode 100644 index b31567f..0000000 --- a/compat/strtoull.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * strtoull.c -- - * - * Source code for the "strtoull" library procedure. - * - * Copyright (c) 1988 The Regents of the University of California. - * Copyright (c) 1994 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * RCS: @(#) $Id: strtoull.c,v 1.9 2007/04/16 13:36:34 dkf Exp $ - */ - -#include "tclInt.h" -#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}; - - -/* - *---------------------------------------------------------------------- - * - * strtoull -- - * - * 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. - * - *---------------------------------------------------------------------- - */ - -#if TCL_WIDE_INT_IS_LONG -unsigned long long -#else -Tcl_WideUInt -#endif -strtoull( - CONST 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 CONST char *p; - register Tcl_WideUInt result = 0; - register unsigned digit; - register Tcl_WideUInt shifted; - int anyDigits = 0, negative = 0; - - /* - * Skip any leading blanks. - */ - - p = string; - while (isspace(UCHAR(*p))) { /* INTL: locale-dependent */ - p += 1; - } - - /* - * Check for a sign. - */ - - if (*p == '-') { - p += 1; - negative = 1; - } else { - if (*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 == '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 == '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; - } - shifted = result << 3; - if ((shifted >> 3) != result) { - goto overflow; - } - result = shifted + digit; - if ( result < shifted ) { - goto overflow; - } - anyDigits = 1; - } - } else if (base == 10) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > 9) { - break; - } - shifted = 10 * result; - if ((shifted / 10) != result) { - goto overflow; - } - result = shifted + digit; - if ( result < shifted ) { - goto overflow; - } - anyDigits = 1; - } - } else if (base == 16) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > ('z' - '0')) { - break; - } - digit = cvtIn[digit]; - if (digit > 15) { - break; - } - shifted = result << 4; - if ((shifted >> 4) != result) { - goto overflow; - } - result = shifted + digit; - if ( result < shifted ) { - goto overflow; - } - anyDigits = 1; - } - } else if ( base >= 2 && base <= 36 ) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > ('z' - '0')) { - break; - } - digit = cvtIn[digit]; - if (digit >= (unsigned) base) { - break; - } - shifted = result * base; - if ((shifted/base) != result) { - goto overflow; - } - result = shifted + digit; - if ( result < shifted ) { - goto overflow; - } - anyDigits = 1; - } - } - - /* - * Negate if we found a '-' earlier. - */ - - if (negative) { - result = (Tcl_WideUInt)(-((Tcl_WideInt)result)); - } - - /* - * See if there were any digits at all. - */ - - if (!anyDigits) { - p = string; - } - - if (endPtr != 0) { - *endPtr = (char *) p; - } - - return result; - - /* - * On overflow generate the right output - */ - - overflow: - errno = ERANGE; - if (endPtr != 0) { - for ( ; ; p += 1) { - digit = *p - '0'; - if (digit > ('z' - '0')) { - break; - } - digit = cvtIn[digit]; - if (digit >= (unsigned) base) { - break; - } - } - *endPtr = (char *) p; - } - return (Tcl_WideUInt)Tcl_LongAsWide(-1); -} |