Texas Instruments TI-89 Developer's Guide

440
Appendix A: System Routines — Display
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
Parse1DExpr
Declaration:
HANDLE
Parse1DExpr
(EStackIndex
i
, Boolean
full_precision
,
unsigned short
width
)
Category(ies):
Display
Description:
Converts the external-tokenized form of an expression to linear ASCII text
form.
Inputs:
i
— EStackIndex of external-tokenized expression.
full_precision
— TRUE to display floating-point numbers with full
available precision; FALSE to display floating-point
numbers with precision determined by MODE screen
settings.
width
— Maximum width of text result; 0 indicates no width
restriction.
Outputs:
Returns the HANDLE to a heap packet which contains the ASCII text
result; returns H_NULL if memory full.
When necessary, symbolic expressions are truncated to
width
-1
characters and terminated with an ellipsis character ( . . . ). When
i
indexes
a tagged floating-point number, the number is rounded to fit in
width
characters. When the number cannot be rounded to fit in
width
characters,
an ellipsis character ( . . . ) is returned.
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: display_statements
(continued)

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