Ng_Execute - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Expression Evaluation /
Algebraic Simplification

NG_execute

Declaration: void NG_execute (HANDLE hExpr , BOOL bApprox )
Category(ies): Expression Evaluation / Algebraic Simplification
Description: Executes one or more expressions or statements.
hExpr
Inputs:
bApprox — NG_APPROXIMATE approximates the result.
Outputs: Depending upon the input, may push evaluation result on estack in external
tokenized form. The evaluation of an algebraic expression or a function
leaves a result on the estack. The execution of commands or programs
does not leave a result on the estack.
Assumptions: None
Clears error context, resets control flags, may cause estack expansion,
Side Effects:
heap compression, or throw errors.
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: None
Example:
If h is the HANDLE of memory containing a tokenized form of the statement
Define f(x) = sin(x)
then
NG_execute (h, NG_DONT_APPROXIMATE);
would define the function f in the current symbol table and would not leave any result on the
estack.
TI-89 / TI-92 Plus Developer Guide
— HANDLE of memory containing expression(s) or
statement(s) to execute.
NG_DONT_APPROXIMATE uses the current mode setting.
Not for Distribution
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Beta Version January 26, 2001