Push_Independent_Factors - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Algebra Utilities

push_independent_factors

Declaration: void push_independent_factors (EStackIndex i , EStackIndex var )
Category(ies): Algebra Utilities
Description: Pushes onto the estack the product of all syntactic factors of the
expression indexed by i that are independent of the variable or kernel
indexed by var . If there are no independent factors, pushes Float1 if
IS_ARITH_APPROX is true and Integer1 if IS_ARITH_APPROX is false.
Inputs: i
var — Index of the top tag of an internally-simplified variable or kernel.
Outputs: None
Assumptions: None
Side Effects: None
Availability: On AMS 2.02 and higher.
TI-89 / TI-92 Plus
Differences: None
See Also: push_dependent_factors, push_constant_factors,
push_nonconstant_factors, push_nonnumeric_factors,
numeric_factor_index, push_but_factor,
index_rmng_fctrs_start_base, index_rmng_fctrs_start_base_tag,
index_rmng_fctrs_start_fctr_tag, index_rmng_factor
Example:
push_quantum (PI_TAG);
k = top_estack;
push_quantum (8u);
replace_top2_with_prod (k);
k = top_estack;
push_quantum (9u);
j = top_estack;
push_ln (j);
replace_top2_with_prod(j);
replace_top2_with_prod(k);
k = top_estack;
push_quantum (9u);
push_independent_factors (k, top_estack);
TI-89 / TI-92 Plus Developer Guide
— Index of the top tag of an internally-simplified algebraic
expression.
/* Push variable x */
/* Push variable y */
/* Push ln(y); */
/* top_estack -> ln(y) * y
/* top_estack -> x * ln(y) * y * pi
/* Push y */
Not for Distribution
*/
/* Pushes x * pi */
279
*/
Beta Version January 26, 2001