Texas Instruments TI-89 Developer's Guide

252
Appendix A: System Routines — Algebra Utilities
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
is_independent_of_tail
Declaration:
Boolean
is_independent_of_tail
(EStackIndex
i
, EStackIndex
j
)
Category(ies):
Algebra Utilities, Lists and Matrices
Description:
Determines whether the expression indexed by
i
is syntactically
independent of all the elements in the tail indexed by
j
.
Inputs:
i
— Index of the top tag of an internally-simplified expression.
j
— Index of a tail of internally-simplified expressions.
Outputs:
Returns TRUE if the expression indexed by
i
is syntactically independent of
all the elements in the tail indexed by
j
. Otherwise returns FALSE.
Assumptions:
None
Side Effects:
None
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: is_free_of_tag, is_independent_of, is_tail_independent_of
Example:
Boolean is_independent_of_elements (EStackIndex i, EStackIndex j)
/* Returns TRUE if the expression indexed by i is syntactically independent
of all the elements in the list indexed by j.
*/
{ return is_independent_of_tail (i, j - 1u);
}

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