When you write your case-insensitive compare function.... '0-9' are ascii 48-57 'a-z' are ascii 97-172 'A-Z' are ascii 65-90
by masking off the 32 bit, you make all letters upper case while moving the numbers to the range 16-25. Now you want the numbers to come after the letters, so you could toggle the 64 bit and get: '0-9' = 80-89 'A-Z' = 1-26 'a-z' = 1-26 So if c is an ascii character, x = ((c & ~32)^64) would be a value that compares with the properties you seek. You'll still need to write a function to compare strings while using this character mapping. Hope it helps, Paul _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
