Texas Instruments TI89 Developer Guide - Page 310
Float1Index if IS_ARITH_APPROX is true and Integer1Index if, IS_ARITH_APPROX is false.
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268 Appendix A: System Routines - Algebra Utilities numeric_factor_index Declaration: EStackIndex numeric_factor_index (EStackIndex i) Category(ies): Algebra Utilities Description: Internally-simplified products have at most one factor with a numeric tag, in which case it is the deepest factor. Returns the index of this syntactic factor if there is one. Otherwise returns Float1Index if IS_ARITH_APPROX is true and Integer1Index if IS_ARITH_APPROX is false. Numeric factors in numerators and denominators are simplified into a single numeric factor. For example: If i indexes the internally-simplified expression 6 * x/(4 * y) then numeric_factor_index(i) returns index(3/2). Inputs: i - Indexes the top tag of an internally-simplified algebraic expression. Outputs: Returns the index of this syntactic factor if there is one. Otherwise returns Float1Index if IS_ARITH_APPROX is true and Integer1Index if IS_ARITH_APPROX is false. Assumptions: None Side Effects: None Availability: All versions of the TI-89 / TI-92 Plus. TI-89 / TI-92 Plus Differences: None See Also: push_constant_factors, index_numeric_term, push_constant_terms (continued) TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001
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