Islower - Texas Instruments TI-89 Developer's Manual

1282

islower

Declaration: BYTE islower (BYTE c )
Category(ies): Character Classification / Conversion
Description: Return non-zero (true) if the given character is a lower-case alphabetic
character (including the international alphabetic characters).
c
Inputs:
Non-zero if c is a lower-case alphabetic, zero otherwise.
Outputs:
Assumptions: Access_AMS_Global_Variables is defined.
Side Effects: None
AMS 2.00 or above.
Availability:
TI-89 / TI-92 Plus
Differences: None
See Also: isalnum, isupper
Example: The toupper function uses islower to check for lower-case characters as
defined below. Because of this, its arguments can be evaluated twice (once
by islower and once by the _toupper MACRO).
#define toupper(c)
TI-89 / TI-92 Plus Developer Guide
Appendix C: Macros — Character Classification / Conversion
— Character to test.
((islower(c)) ? _toupper(c) : (c))
Not for Distribution Beta Version January 26, 2001