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annotate lib/alib/is_digit.a @ 2677:c58baa9276c8 lwtools-port

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Fix string constants used as numbers More cases of string constants being used instead of ascii constants.
author William Astle <lost@l-w.ca>
date Sun, 10 Jun 2012 14:33:53 -0600
parents 7d70b7e1cb21
children aaba193af04f
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1 *****************************************
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2
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3 * See if character in "B" is a digit 0..9
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4
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5 * OTHER MODULES NEEDED: none
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7 * ENTRY: B=character to test
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8
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9 * EXIT: CC zero=1 if digit, 0 if not
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11 nam Is Char a Digit?
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12 ttl Assembler Library Module
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15 psect IS_DIGIT,0,0,0,0,0
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18 IS_DIGIT:
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19 cmpb #'0
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20 blo no not digit, zero cleared
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21 cmpb #'9 if equal, zero set
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22 bhi no not digit, zero cleared
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23 orcc #%00000100 set zero
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25 no
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26 rts
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28 endsect
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