Texas Instruments TI-89 Developer's Guide

1280
Appendix C: Macros — Character Classification / Conversion
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
isdigit
Declaration:
BYTE
isdigit
(BYTE
c
)
Category(ies):
Character Classification / Conversion
Description:
Return non-zero (true) if the given character is a digit (‘0’ . . . ‘9’).
Inputs:
c
— Character to test.
Outputs:
Non-zero if
c
is a digit, zero otherwise.
Assumptions:
Access_AMS_Global_Variables is defined.
Side Effects:
None
Availability:
AMS 2.00 or above.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: isalnum
Example:

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA