Function CPLToupper

port/cpl_string.cpp:3152–3155

Converts a (ASCII) lowercase character to uppercase. * * Same as standard toupper(), except that it is not locale sensitive. * * @since GDAL 3.9 */

 * @since GDAL 3.9
 */
int CPLToupper(int c)
{
    return (c >= 'a' && c <= 'z') ? (c - 'a' + 'A') : c;
}

/************************************************************************/
/*                             CPLTolower()                             */