HP -42S Manual page 30

Name Description
CPX? If the x-register contains a complex number, execute the next program line; if the x-
register does not contain a complex number, skip the next program line.
CROSS Returns the cross product of two vectors (matrices or complex numbers).
DECM Selects Decimal mode (base 10).
DEG Select the Degrees angular mode.
DEL Delete the specified number of lines from the current program. Program-entry mode
must be on. (Not programmable.) Parameter: number of lines.
DELAY Set the print delay time to x seconds.
DELR Delete row. Delete the current row from the indexed matrix.
DET Determinant. Returns the determinant of the matrix in the x-register.
DIM Dimension a matrix to x columns and y rows. If the matrix does not exist, DIM creates
it. Parameter: variable name (indirect allowed)
DIM? Returns the dimensions of the matrix in the x-register (rows to the y-register and
columns to the x-register).
DOT Dot Product. Returns the dot product of two vectors (matrices or complex numbers).
DSE Decrement, Skip if (less than or) Equal. Given ccccccc.fflii in a variable or register,
decrements ccccccc by ii and skips the next program line if ccccccc is now ≤ fff.
Parameter: register or variable (indirect allowed)
EDIT Edit a matrix in the x-register.
EDlTN Edit a named matrix. Parameter: variable name (indirect allowed)
END End of a program.
ENG Select Engineering display format. Parameter: number of digits (indirect allowed)
ENTER Separate two numbers keyed in sequentially; copies x into the y-register, y into the z-
register, and z into the t-register, and loses t.
EXITALL Exit all menus.
EXPF Select the exponential curve-fitting model.
E↑X Natural exponential. Returns e
E↑X-1 Natural exponential for values of x which are close to zero. Returns e
provides a much higher accuracy in the fractional part of the result.
FC? Flag clear test. If the specified flag is clear, executes the next program line; if the flag
is set, skips the next program line. Parameter: flag number (indirect allowed)
FC?C Flag clear test and clear. If the specified flag is clear, execute the next program line;
if the flag is set, skip the next program line. Cleared after the test is complete. (This
function can be used only with flags 00 through 35 and 81 through 99.) Parameter:
flag number (indirect allowed)
FCSTX Forecasts an x-value given a y-value.
FCSTY Forecasts a y-value given an x-value.
FIX Select Fixed-decimal display format. Parameter: number of digits (indirect allowed)
FNRM Returns the Frobenius norm of the matrix in the x-register.
FP Returns the fractional part of x.
FS? Flag set test. If the specified flag is set, execute the next program line; if the flag is
clear, skip the next program line. Parameter: flag number (indirect allowed)
FS?C Flag set test and clear. If the specified flag is set, execute the next program line; if the
flag is clear, skip the next program line. Clear the flag after the test is complete. (This
function can be used only with flags 00 through 35 and 81 through 99.) Parameter:
flag number (indirect allowed)
GAMMA Gamma function. Returns Γ(x).
GETKEY Get key. The calculator waits for you to press a key. When you do, the key number is
returned to the x-register. Keys are numbered from 1 through 37 ( Σ+ through ÷ )for
normal keys and 38 through 74
GETM Get matrix. Copy a submatrix into the x-register from the indexed matrix.
GRAD Select Grads angular mode.
GROW
Select Grow mode. Executing → or J+ causes the matrix to grow by one new row if
x
.
through ■CATALOG) for shifted keys.
(■ Σ–
x
–1, which