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strtoul.c
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C/C++ Source or Header
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2000-12-21
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663b
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36 lines
/*
* linux/lib/string.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
#include <sys/types.h>
#include <string.h>
#include <ctype.h>
#ifndef __HAVE_ARCH_STRTOUL
unsigned long strtoul(const char *cp,char **endp,unsigned int base)
{
unsigned long result = 0,value;
if (!base) {
base = 10;
if (*cp == '0') {
base = 8;
cp++;
if ((*cp == 'x') && isxdigit(cp[1])) {
cp++;
base = 16;
}
}
}
while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp) ? toupper(*cp) : *cp)-'A'+10) < base) {
result = result*base + value;
cp++;
}
if (endp)
*endp = (char *)cp;
return result;
}
#endif