Texas Instruments TI-89 Developer's Guide

498
Appendix A: System Routines — EStack Arithmetic
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
push_quantum_as_nonnegative_int
Declaration:
void
push_quantum_as_nonnegative_int
(Quantum
q
)
Category(ies):
EStack Arithmetic
Description:
Pushes
q
onto the estack as a tagged non-negative big integer.
Inputs:
q
— Quantum.
Outputs:
None
Assumptions:
None
Side Effects:
None
Availability:
On AMS 2.02 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: push_negate_quantum_as_negint, push_reciprocal_of_quantum,
push_minus_recip_of_quantum, push_quantum_pair_as_pos_frac
Example:
void push_arclen (EStackIndex i, EStackIndex vi, EStackIndex j, EStackIndex k)
/* j and k index expressions, vi indexes a variable, and i indexes an expression
simplified through variable vi.
Pushes onto the estack the arc displacement of expression i with respect
to vi going from j through k.
*/
{ Access_AMS_Global_Variables;
EStackIndex m,
old_top = top_estack;
push_quantum_as_nonnegative_int (2u);
m = top_estack;
push_1st_derivative (i, vi);
replace_top2_with_pow (m);
add1_to_top ();
i = top_estack;
push_sqrt (i);
delete_between (old_top, i);
i = top_estack;
push_def_int (i, vi, j, k);
delete_between (old_top, i);
}

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