Method toLowerCase

lib/java/lang/String.java:561–569

(char ch)

    // Optimized for ASCII
    private char toLowerCase(char ch) {
        if (ch < 128) {
            if ('A' <= ch && ch <= 'Z') {
                return (char) (ch + ('a' - 'A'));
            }
            return ch;
        }
        return Character.toLowerCase(ch);
    }

    // Optimized for ASCII
    private char toUpperCase(char ch) {