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Added alphanumunder to ctype module

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This commit is contained in:
Curtis F Kaylor 2021-08-31 21:08:21 -04:00
parent c1d9389a39
commit 4958e3c432
4 changed files with 26 additions and 5 deletions
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12
doc/ctype.txt
View File

@ -20,6 +20,14 @@ The following functions are defined:
Note: Calls internal routine isaln, which in turn
calls internal routines isdgt and isalp.
b = isalnu(c); Returns TRUE if c is an alphanumunder, otherwise FALSE.
An alphanumunder character is a letter (A-Z or a-z),
a digit (0-9), or an underline (_).
Note: Calls internal routine isalu, which in turn
calls internal routines isdgt and isalp.
b = isalph(c); Returns TRUE if c is alphabetic, otherwise FALSE.
An alphabetic character is a letter (A-Z or a-z).
@ -116,6 +124,6 @@ Implementation: The standard method of implementing the ctype library is to
use a bit mask table of 128 bytes (one for each standard ASCII character).
This library instead uses a series of comparisons in the internal routines,
which leave the accumulator unmodified, and occupies approximately 128 bytes
of memory.
which leave the accumulator unmodified, and generates approximately 128 bytes
of machine code.

9
include/ctype.a02
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@ -11,6 +11,8 @@
SUBROUTINE CTYPE
;Character Test Functions - Set Accumulator
ISALNU: JSR ISANU ;Is Alphanumunder
BVC .ISBTF
ISALNM: JSR ISALN ;Is Alphanumeric Character
BVC .ISBTF
ISALPH: JSR ISALP ;Is Alphabetic Character
@ -55,10 +57,13 @@ TOUPPR: JSR ISLWR ;If Char IS Not Lower Case
RTS ; and Return
;Machine Language Subroutines - Set/Clear Carry, Preserve Accumulator
ISALN: JSR ISDGT ;If Char IS Digit
ISANU: CMP #$5F ;If Char = '_'
BEQ .ISSEC ; Return Carry Set
;Else
ISALN: JSR ISDGT ;If Char IS Digit
BCS .ISRTS ; Return Carry Set
;Else
ISALP: JSR ISUPR ;If Char IS Upper Case
ISALP: JSR ISUPR ;If Char IS Upper Case
BCS .ISRTS ; Return Carry Set
;Else
ISLWR: CMP #$61 ;If Char < 'a'

6
include/ctype.h02
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@ -8,6 +8,12 @@
* Returns: TRUE or FALSE */
char isalnm();
/* Check for Alphanumunder Character *
* (Alphabetic, Digit, or '_') *
* Args: c - Character to Check *
* Returns: TRUE or FALSE */
char isalnu();
/* Checks for Alphabetic Character *
* (Upper Case or Lower Case) *
* Args: c - Character to Check *

4
test/ctypetst.c02
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@ -21,6 +21,7 @@ head:
putchr('L'); //Lower Case
putchr('A'); //Alphabetic
putchr('N'); //Alphanumeric
putchr('M'); //Alphanumunder
putchr('G'); //Graphic
putchr('R'); //Printable
putchr('B'); //Binary
@ -43,6 +44,7 @@ loop:
c = islowr(i) & $0A | $20; putchr(c);
c = isalph(i) & $0A | $20; putchr(c);
c = isalnm(i) & $0A | $20; putchr(c);
c = isalnu(i) & $0A | $20; putchr(c);
c = isgrph(i) & $0A | $20; putchr(c);
c = isprnt(i) & $0A | $20; putchr(c);
c = isbdgt(i) & $0A | $20; putchr(c);
@ -51,6 +53,6 @@ loop:
if (i == 0) goto exit;
if (i & $0F <> 0) goto loop;
newlin();
c = getkey();
c = getchr();
if (c == $1B) goto exit;
goto head;