Texas Instruments TI-89 Developer's Guide

1042
Appendix A: System Routines — Symbol Table Utilities
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
SymFindPrev
Declaration:
SYM_ENTRY *
SymFindPrev
(void)
Category(ies):
Symbol Table Utilities (low-level)
Description:
Return the previous symbol as specified by
SymFindFirst
.
Inputs:
None
Outputs:
SYM_ENTRY pointer to previous symbol.
Assumptions:
This is a direct pointer to the symbol table, heap compression will invalidate
this pointer.
Side Effects:
None
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: SymFindFirst, SymFindNext
Example:
Normally the only routine used with
SymFindFirst
is
SymFindNext
. This
routine allows an app to traverse the symbol table in both directions.
VAR-LINK uses this routine to present a scrollable list of all symbols
without having to maintain a separate in-memory list.

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