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- Cleanup the /lib directory, by putting more 3rd-party libs in /3rdparty, and by creating a new directory called /sdk where libraries which emulate the ones in the WDK are present (Such as uuid, nt, crt, etc).
- Removed lib/interlck and lib/string. - Removed math routines from lib/rtl. - Created a new library called libcntpr which is what NT/WDK use when compiling the kernel/system libraries. This is an "NT-Private" version of the CRT which is supposed to contain what we had in lib/string and lib/rtl. svn path=/trunk/; revision=26095
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74
reactos/lib/sdk/crt/stdlib/strtoul.c
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reactos/lib/sdk/crt/stdlib/strtoul.c
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/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
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#include <precomp.h>
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#include <ctype.h>
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/*
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* Convert a string to an unsigned long integer.
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*
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* Ignores `locale' stuff. Assumes that the upper and lower case
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* alphabets and digits are each contiguous.
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*
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* @implemented
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*/
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unsigned long
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strtoul(const char *nptr, char **endptr, int base)
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{
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const char *s = nptr;
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unsigned long acc;
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int c;
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unsigned long cutoff;
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int neg = 0, any, cutlim;
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/*
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* See strtol for comments as to the logic used.
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*/
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do {
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c = *s++;
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} while (isspace(c));
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if (c == '-')
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{
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neg = 1;
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c = *s++;
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}
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else if (c == '+')
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c = *s++;
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if ((base == 0 || base == 16) &&
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c == '0' && (*s == 'x' || *s == 'X'))
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{
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c = s[1];
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s += 2;
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base = 16;
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}
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if (base == 0)
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base = c == '0' ? 8 : 10;
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cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
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cutlim = (unsigned long)ULONG_MAX % (unsigned long)base;
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for (acc = 0, any = 0;; c = *s++)
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{
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if (isdigit(c))
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c -= '0';
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else if (isalpha(c))
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c -= isupper(c) ? 'A' - 10 : 'a' - 10;
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else
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break;
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if (c >= base)
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break;
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if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
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any = -1;
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else {
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any = 1;
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acc *= base;
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acc += c;
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}
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}
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if (any < 0)
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{
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acc = ULONG_MAX;
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__set_errno(ERANGE);
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}
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else if (neg)
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acc = -acc;
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if (endptr != 0)
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*endptr = any ? (char *)s - 1 : (char *)nptr;
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return acc;
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}
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