Texas Instruments TI-89 - Push_Colnorm

680
Appendix A: System Routines — Lists and Matrices
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
push_colnorm
Declaration:
void
push_colnorm
(EStackIndex
mat_idx
)
Category(ies):
Lists and Matrices, Math
Description:
Pushes onto the estack the column norm of the matrix indexed by
mat_idx
.
The column norm is the largest value of the sums of the absolute values of
the elements in each column of the matrix.
Inputs:
mat_idx
— Indexes the input matrix.
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: push_rownorm, push_matnorm
Example:
EStackIndex mIndx;
/* A matrix is just a list of lists */
push_quantum(END_TAG);
push_quantum(END_TAG); push_Float(-12); push_Float(-24); push_quantum(LIST_TAG);
push_quantum(END_TAG); push_Float(7); push_Float(5); push_quantum(LIST_TAG);
push_quantum(LIST_TAG);
mIndx = top_estack; /* mIndx points to [[5, 7]] [-24, -12]] */
/* The column norm (29 == abs(-24)+abs(5)) will be pushed onto the estack */
push_colnorm( mIndx );
/* The row norm (36 == abs(-24)+abs(-12)) will be pushed onto the estack */
push_rownorm( mIndx );
/* Push the matrix norm (28.178) */
push_matnorm( mIndx );
/* Push the determinant (108) */
push_determinant( mIndx, NULL );