Push_Expand - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Math

push_expand

Declaration: void push_expand (EStackIndex i , EStackIndex ki ,
Boolean use_part_frac )
Category(ies): Math
Description: Pushes onto the estack the internally-simplified equivalent of the
expression indexed by i , expanded with respect to the variable or kernel
indexed by ki , or with respect to all variables and kernels if
ki is equal to NULL_INDEX. If use_part_frac is FALSE, rational
expressions are not expanded beyond proper fractions. Otherwise, partial
fraction expansion is also done, using factorization over the real rather than
complex numbers.
Inputs: i
ki
use_part_frac — TRUE if partial fraction expression can be used.
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:
push_quantum_as_nonnegative_int (2u);
exponent = top_estack;
push_quantum (8u);
add1_to_top ();
replace_top2_with_pow (exponent);
push_expand (top_estack, NULL_INDEX, FALSE);
TI-89 / TI-92 Plus Developer Guide
— Indexes the top tag of an internally-simplified algebraic
expression, algebraic comparison, or aggregate
thereof.
— Indexes NULL_INDEX or the top tag of an
internally-simplified variable or a kernel.
/* Push variable x */
/* top_estack -> x + 1 */
/* top_estack -> (x + 1)^2 */
/* push x^2 + 2x + 1 */
Not for Distribution
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Beta Version January 26, 2001