Texas Instruments TI-89 - Push_Round

824
Appendix A: System Routines — Math
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
push_round
Declaration:
void
push_round
(EStackIndex
val_idx
, EStackIndex
num_dig_idx
)
Category(ies):
Math
Description:
Pushes onto the estack the argument rounded to the specified number of
digits.
Inputs:
val_idx
— Indexes the input number, list, or matrix.
num_dig_idx
— Indexes the number of digits after the decimal place to
round to or if NULL then uses the default value from the
MODE settings.
Outputs:
None
Assumptions:
None
Side Effects:
May expand expression stack, cause heap compression, or throw an error.
Availability:
On AMS 2.00 and higher.
TI-89 / TI-92 Plus
Differences:
None
See Also:
None
Example:
This example creates a static column vector and a static integer then
creates a unit vector from the column vector and finally rounds that result
to four decimal places.
/* static column vector */
static const Quantum colVec[] = {END_TAG,
END_TAG,3,1,NONNEGATIVE_INTEGER_TAG,LIST_TAG,
END_TAG,2,1,NONNEGATIVE_INTEGER_TAG,LIST_TAG,
END_TAG,1,1,NONNEGATIVE_INTEGER_TAG,LIST_TAG,
LIST_TAG
};
#define colVecIndex ((EStackIndex) (colVec+sizeof(colVec)-1))
static const Quantum Integer4 [] = {4u, 1u, NONNEGATIVE_INTEGER_TAG};
#define Integer4Index ((EStackIndex) (Integer4+2))
push_unitv( colVecIndex );
push_round( top_estack, Integer4Index );