Last_Element_Index - Texas Instruments TI-89 Developer's Manual

676

last_element_index

Declaration: EStackIndex last_element_index (EStackIndex i )
Category(ies): Lists and Matrices
Description: Returns an index to the last element of the expression indexed by i .
Inputs: i
Outputs: Returns i if i indexes an END_TAG. Otherwise returns the index of the last
element of a nonempty tail indexed by i .
Assumptions: None
Side Effects: None
On AMS 1.05 and higher.
Availability:
TI-89 / TI-92 Plus
Differences: None
See Also: remaining_element_count
Example:
push_quantum (END_TAG);
last_element_index (top_estack);
push_Float (3.7);
foo = top_estack;
push_Float (5.4);
last_element_index (top_estack);
TI-89 / TI-92 Plus Developer Guide
Appendix A: System Routines — Lists and Matrices
— Index of the top tag of a tail of expressions.
Not for Distribution
/* Returns top_estack */
/* Returns foo */
Beta Version January 26, 2001