Texas Instruments TI-89 Developer's Guide

812
Appendix A: System Routines — Math
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
push_phase
Declaration:
void
push_phase
(EStackIndex
i
)
Category(ies):
Math
Description:
Pushes onto the estack the internally-simplified phase angle of the
expression indexed by
i
, measured counter-clockwise in radians from the x
axis in the range (
Lp
,
p
].
Inputs:
i
— Index of the top tag of an internally-simplified algebraic expression,
algebraic comparison, or aggregate thereof.
Outputs:
None
Assumptions:
None
Side Effects:
None
Availability:
On AMS 2.02 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also:
None
Example:
push0 ();
real_part = top_estack;
push1 ();
replace_top2_with_imre (real_part);
push_phase (top_estack); /* Pushes pi/2 */

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