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WP 34S Owner‘s Manual
Edition 2.2
Page 48 of 103
Name
Keys to press
in modes Remarks
M.COPY
…
DECM
Takes a matrix
descriptor
in
Y
and a register
number in
X
. Copies the matrix into registers
starting at
X
. Returns a properly formed matrix
descriptor in
X
.
M.DY
…
\
Sets the format for date display.
M.IJ
…
DECM
Takes a matrix
descriptor
in
X
and a register
number in
Y
. Returns the column that register
represents in
Y
and the row in
X
. The descriptor
is saved in
L
. M.IJ is similar to
PPC M4
.
M.LU
…
DECM
Takes
descriptor
of a square matrix in
X
. Trans-
forms the matrix into its LU decomposition. The
matrix is modified in-situ. The value in
X
is re-
placed by a pivot descriptor that defines the pi-
vots that were required to calculate the decom-
position. The most significant digit is the pivot for
the first diagonal entry, the next most the second
and so forth.
M.REG
…
DECM
Takes a matrix
descriptor
in
X
, a row number in
Y
, and a column number in
Z
. The descriptor is
saved in
L
. M.REG returns the register number
in
X
(popping the stack twice). It is similar to
PPC M5
.
M.SQR?
…
DECM
Takes a matrix
descriptor
in
X
and tests it. Re-
turns ―true‖ if the matrix is square.
NAND
…
\
Works in analogy to AND.
NaN?
…
\
Tests
x
for being
―Not a Number‖.
nBITS
…
Integer
Counts bits set in
x
like #B does on
HP-16C
.
nCOL
…
DECM
Takes a matrix
descriptor
in
X
, saves it in
L
, and
returns the number of columns in this matrix.
NEXTP
…
\
Returns the next prime number >
x
.
NOP
…
PRG
―Empty‖ step FWIW.
NOR
…
\
Works in analogy to AND.