mapcase.c

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#include <grass/gis.h>
/*
 * Map uppercase A-Z to lower case a-z
 *
 */
 
/*!
 * \brief convert string to lower case
 *
 * Upper case
 * letters in the string <b>s</b> are converted to their lower case equivalent.
 * Returns <b>s.</b>
 *
 *  \param string
 *  \return char
 */
 
char *G_tolcase(char *string)
{
    char *p;
 
    for (p = string; *p; p++) {
        /* convert to lower case */
        if (*p >= 'A' && *p <= 'Z')
            *p -= 'A' - 'a';
    }
 
    return (string);
}
 
/*
 * Map lowercase a-z to uppercase A-Z
 *
 */
 
/*!
 * \brief convert string to upper case
 *
 * Lower case letters in the string <b>s</b> are converted to their upper case
 * equivalent. Returns <b>s.</b>
 *
 *  \param string
 *  \return char
 */
 
char *G_toucase(char *string)
{
    char *p;
 
    for (p = string; *p; p++) {
        /* convert to upper case */
        if (*p >= 'A' && *p <= 'z')
            *p += 'A' - 'a';
    }
 
    return (string);
}