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/* Project:     OSLib
 * Description: The OS Construction Kit
 * Date:                1.6.2000
 * Idea by:             Luca Abeni & Gerardo Lamastra
 *
 * OSLib is an SO project aimed at developing a common, easy-to-use
 * low-level infrastructure for developing OS kernels and Embedded
 * Applications; it partially derives from the HARTIK project but it
 * currently is independently developed.
 *
 * OSLib is distributed under GPL License, and some of its code has
 * been derived from the Linux kernel source; also some important
 * ideas come from studying the DJGPP go32 extender.
 *
 * We acknowledge the Linux Community, Free Software Foundation,
 * D.J. Delorie and all the other developers who believe in the
 * freedom of software and ideas.
 *
 * For legalese, check out the included GPL license.
 */


#include <arch/ctype.h>
#include <arch/i386/string.h>

FILE(strbase);

int isalnum(char c)
{
        return (isalpha(c) || isdigit(c));
}

int isalpha(char c)
{
    if ((c >= 'A' && c <= 'z'))
       return(1);
    else return(0);
}

int iscntrl(char c)
{
        if (c < '0') {
                return 1;
        } else {
                return 0;
        }
}


int islower(char c)
{
    if ((c >= 'a' && c <= 'z'))
       return(1);
    else return(0);
}

int isspace(char c)
{
    if ((c >= 0x09 && c <= 0x0d) || (c == 0x20)) return(1);
    return(0);
}

int isupper(char c)
{
    if ((c >= 'A' && c <= 'Z'))
       return(1);
    else return(0);
}

char toupper(char c)
{
    if (c >= 'a' && c <= 'z') return(c-'a'+'A');
    else return(c);
}

char tolower(char c)
{
    if (c >= 'A' && c <= 'Z') return(c-'A'+'a');
    else return(c);
}