Function isdigit

eval/CIPO_evaluation/common/gason.cpp:81–83

}

static inline bool isdigit(char c) {
    return c >= '0' && c <= '9';
}

static inline bool isxdigit(char c) {
    return (c >= '0' && c <= '9') || ((c & ~' ') >= 'A' && (c & ~' ') <= 'F');