Is_Whole_Number - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — EStack Arithmetic

is_whole_number

Declaration: Boolean is_whole_number (IndexConstQuantum i )
Category(ies): EStack Arithmetic
Description: Determines whether the expression indexed by i is a big integer, a float
whose fractional part is 0.0, or any real zero.
i
Inputs:
Returns TRUE if the expression indexed by i is a big integer, a float whose
Outputs:
fractional part is 0.0, or any real zero. Otherwise, returns FALSE.
Assumptions: i points to the top tag of an expression.
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: is_Float_exact_whole_number
Example:
is_whole_number(i) -> TRUE if i indexes a tagged float 1.2345678901234e30
TI-89 / TI-92 Plus Developer Guide
— Index of an expression.
Not for Distribution
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Beta Version January 26, 2001