Push_Is_Prime - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — EStack Arithmetic

push_is_prime

Declaration: void push_is_prime (EStackIndex i )
Category(ies): EStack Arithmetic
Description: Pushes TRUE if the expression indexed by i is determined to be a prime
exact whole number, such as 2, 2., 3, 3., 5, 5., etc. Pushes FALSE if it is
any other number or a transfinite tag. Otherwise throws ER_DOMAIN.
NOTE: Floats > MAX_EXACT_FLOAT_WHOLE_NUMBER are whole numbers, but not
Inputs: i
Outputs: None
Assumptions: None
Side Effects: None
Availability: On AMS 2.02 and higher.
TI-89 / TI-92 Plus
Differences: None
See Also: push_factor
Example:
push_Float (2.0);
push_is_prime (top_estack);
push_is_prime (Integer1Index);
push_negate_quantum_as_negint (2u);
push_is_prime (top_estack);
push_reciprocal_of_quantum (2u);
push_is_prime (top_estack);
TI-89 / TI-92 Plus Developer Guide
exact whole numbers.
— Index to the top tag of an expression.
/* Pushes TRUE_TAG */
/* Pushes FALSE_TAG */
/* Pushes FALSE_TAG */
/* Pushes FALSE_TAG */
Not for Distribution
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Beta Version January 26, 2001