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Added notes to atari.d
author Boisy Pitre <boisy.pitre@nuance.com>
date Tue, 28 Feb 2012 09:26:09 -0600
parents 7d70b7e1cb21
children aaba193af04f
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*****************************************

* See if character in "B" is a alpha letter a..z or A..Z or digit 0..9

* OTHER MODULES NEEDED: IS_ALPHA, IS_DIGIT

* ENTRY: B=character to test

* EXIT: CC zero=1 if alphanumeric, 0 if not


 nam Is Char AlphaNumeric?
 ttl Assembler Library Module


 psect IS_ALNUM,0,0,0,0,0


IS_ALNUM:
 lbsr IS_ALPHA
 BEQ yes upper/lowercase letters are alphanumeric
 lbsr IS_DIGIT last chance to set flags.

yes
 rts


 endsect