Texas Instruments TI-89 Developer's Guide

Appendix A: System Routines — Graphing
611
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
GT_Regraph_if_neccy
Declaration:
void
GT_Regraph_if_neccy
(void)
Category(ies):
Graphing
Description:
If the current graph needs to be regraphed then do it.
Inputs:
None
Outputs:
None
Assumptions:
None
Side Effects:
May cause heap compression.
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: GraphActivate
Example:
One of the first things the trace function calls is
GT_Regraph_if_neccy
to
make sure that it is tracing a valid graph.
BOOL GT_Trace( WORD PromptId, BCD16 *RetVal, WORD Flags )
{
.
.
.
GT_Regraph_if_neccy(); /* need to regraph if graph not clean */
.
.
.

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