Texas Instruments TI-89 Developer's Guide

Appendix A: System Routines — Lists and Matrices
675
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
is_square_matrix
Declaration:
Boolean
is_square_matrix
(EStackIndex
i
)
Category(ies):
Lists and Matrices
Description:
Determines whether the expression indexed by
i
is a square matrix.
Inputs:
i
— Index of the top tag of an internally-simplified expression.
Outputs:
Returns TRUE if the expression indexed by
i
is a square matrix. Otherwise
returns FALSE.
Assumptions:
None
Side Effects:
None
Availability:
On AMS 1.05 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: is_matrix
Example:
push_Float (3.7);
is_square_matrix (top_estack); /* Returns FALSE */

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