Replace_Top2_With_Imre - Texas Instruments TI-89 Developer's Manual

298

replace_top2_with_imre

Declaration: void replace_top2_with_imre (EStackIndex i )
Category(ies): Algebra Utilities
Description: The top two expressions on the estack are internally-simplified algebraic
expressions, and j indexes the deeper of these two expressions. If either is
Float and the other is numeric, replaces with 0.0 either that has magnitude
<= IM_re_tol † (magnitude of its companion). Then deletes the top
expression if it is zero, otherwise pushing an IM_RE_TAG.
Inputs: i
Outputs: None
Assumptions: The top two expressions are internally-simplified algebraic expressions.
Side Effects: None
Availability: On AMS 2.02 and higher.
TI-89 / TI-92 Plus
Differences: None
See Also: None
Example:
/* Replaces the top two expressions with the expression 3.7 + 5.2 i */
push_Float (3.7);
i = top_estack;
push_Float (5.2);
replace_top2_with_imre (i);
TI-89 / TI-92 Plus Developer Guide
Appendix A: System Routines — Algebra Utilities
— Indexes the top tag of the internally-simplified algebraic expression
next_expression_index (top_estack).
Not for Distribution Beta Version January 26, 2001