Texas Instruments TI-89 Developer's Guide

1010
Appendix A: System Routines — Symbol Table Utilities
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
DerefSym
Declaration:
SYM_ENTRY *
DerefSym
(HSYM
hsym
)
Category(ies):
Symbol Table Utilities
Description:
Convert an HSYM into a direct SYM_ENTRY pointer.
Inputs:
hsym
— HSYM of a variable (from
VarRecall
or
VarStore
for example).
Outputs:
SYM_ENTRY pointer represented by
hsym
or NULL if
hsym
is 0.
Assumptions:
NOTE:
SYM_ENTRY pointers are invalid after heap compression. HSYMs become
invalid after adding or removing symbol table entries.
Side Effects:
None
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: VarRecall, VarStore
Example:
See
VarStore
.

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