Function siptlw

src/siphash.c:50–56

Fast tolower() alike function that does not care about locale * but just returns a-z instead of A-Z. */

/* Fast tolower() alike function that does not care about locale
 * but just returns a-z instead of A-Z. */
int siptlw(int c) {
    if (c >= 'A' && c <= 'Z') {
        return c+('a'-'A');
    } else {
        return c;
    }
}

/* Test of the CPU is Little Endian and supports not aligned accesses.
 * Two interesting conditions to speedup the function that happen to be