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/* Project:     OSLib
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 * Description: The OS Construction Kit
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 * Date:                1.6.2000
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 * Idea by:             Luca Abeni & Gerardo Lamastra
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 *
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 * OSLib is an SO project aimed at developing a common, easy-to-use
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 * low-level infrastructure for developing OS kernels and Embedded
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 * Applications; it partially derives from the HARTIK project but it
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 * currently is independently developed.
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 *
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 * OSLib is distributed under GPL License, and some of its code has
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 * been derived from the Linux kernel source; also some important
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 * ideas come from studying the DJGPP go32 extender.
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 *
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 * We acknowledge the Linux Community, Free Software Foundation,
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 * D.J. Delorie and all the other developers who believe in the
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 * freedom of software and ideas.
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 *
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 * For legalese, check out the included GPL license.
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 */
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#include <ll/i386/stdlib.h>
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#include <ll/i386/string.h>
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#include <ll/i386/limits.h>
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#include <ll/stdarg.h>
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#include <ll/ctype.h>
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FILE(strtou);
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long unsigned strtou(char *s,int base,char **scan_end)
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{
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    int value,overflow = 0;
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    long unsigned result = 0,oldresult;
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    /* Skip trailing zeros */
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    while (*s == '0') s++;
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    if (*s == 'x' && base == 16) {
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        s++;
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        while (*s == '0') s++;
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    }
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    /* Convert number */
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    while (isnumber(*s,base)) {
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        value = tonumber(*s++);
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        if (value > base || value < 0) return(0);
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        oldresult = result;
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        result *= base;
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        result += value;
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        /* Detect overflow */
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        if (oldresult > result) overflow = 1;
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    }
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    if (scan_end != 0L) *scan_end = s;
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    if (overflow) result = INT_MAX;
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    return(result);
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}
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