Push_Perm - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Math

push_perm

Declaration: void push_perm (EStackIndex i , EStackIndex j )
Category(ies): Math
Description: Let i index expression z, and let j index expression k. Pushes z!/k! onto the
estack. For integer k >= 0, this is the Pochhammer symbol (z)[k], or the
"falling factorial power" z † (z - 1) † . . . † (z - k). If z is also an integer and
z >= k, this is the number of permutations of z items taken k at a time.
Inputs: i , j — Indices of the top tags of internally-simplified algebraic
Outputs: None
Assumptions: None
Side Effects: None
Availability: On AMS 2.02 and higher.
TI-89 / TI-92 Plus
None
Differences:
See Also: None
Example:
push_quantum_as_nonnegative_int (4u);
i = top_estack;
push_quantum_as_nonnegative_int (2u);
push_perm (i, top_estack);
TI-89 / TI-92 Plus Developer Guide
expressions or aggregates thereof.
/* Pushes a tagged integer 12 */
Not for Distribution
811
Beta Version January 26, 2001