Texas Instruments TI-89 Developer's Guide

Appendix A: System Routines — Math
841
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
raise_to_top
Declaration:
void
raise_to_top
(EStackIndex
i
)
Category(ies):
Math
Description:
Replaces the top expression on the estack with the simplified result of
(expression
i
)^(top expression). If expression
i
is a square matrix: pushes
the same-size identity matrix if
top_estack
indexes a zero; pushes the
iterated matrix product if
top_estack
indexes a positive whole number;
pushes the inverse matrix or its iterated matrix product if
top_estack
indexes a negative whole number.
Inputs:
i, j
— Indexes to the top tags of internally-simplified algebraic
expressions, algebraic comparisons, or aggregates thereof.
Outputs:
None
Assumptions:
None
Side Effects:
None
Availability:
On AMS 2.02 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: push_dot_exponentiate, push_exponentiate, replace_top2_with_pow,
push_sqrt, push_square, push_reciprocal,
replace_top_with_reciprocal
Example:
void push_increment_degree (EStackIndex power, EStackIndex inc)
/* Pushes onto the estack factor_base (power) ^ (inc + factor_deg(power)) */
{ push_sum (inc, factor_exponent_index (power));
raise_to_top (factor_base_index (power));
}

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