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WP 34S Owner‘s Manual
Edition 2.2
Page 56 of 103
Name
Keys to press
in modes Remarks
SL
SL
n
Integer
Works like
n
(up to 63) consecutive SLs on
HP-16C
. SL 0 executes as NOP.
SLOW
…
All
Sets the processor speed to ―slow‖. This is also
entered for low battery voltage.
SLV
label
DECM
Solves the equation f(
x
) = 0 , with f(
x
) calcu-
lated by the routine specified. Two initial esti-
mates of the root must be supplied in
X
and
Y
when calling SLV. For the rest, the user interface
is as in
HP-15C
. This also means SLV acts as a
test, so the next program step will be skipped if
SLV failed to find a root.
SLVQ
…
DECM
Solves the quadratic equation
0
2
c
bx
ax
,
with the real parameters put on the stack
[
c, b, a
, …] , and tests the result.
If
0
4
:
2
ac
b
r
, SLVQ returns
a
r
b
2
in
Y
and
X
. In a program, the step after
SLVQ will be executed.
Else, SLVQ returns the real part of the first
complex root in
X
and its imaginary part in
Y
(the 2
nd
root is the conjugate of the first
– see
CONJ). If run directly from the keyboard, the
complex indicator is lit then
– in a program,
the step after SLVQ is skipped.
In either case,
r
is returned in
Z
. Higher stack
levels are kept unchanged.
L
contains
c
.
SMODE?
…
\
Returns the integer sign mode set, i.e.
2 (meaning ―true‖) for 2‘s complement,
1 (―true‖ again) for 1‘s complement,
0 (i.e. ―false‖) for unsigned, or
-
1 (i.e. ―true‖) for sign and mantissa mode.
SPEC?
…
\
True if
x
is special, i.e. infinity or NaN.
SR
SR
n
Integer
Works like
n
consecutive SRs on
HP-16C
. SR 0
executes as NOP.
SSIZE4
…
\
Sets the stack size to 4 or 8 levels, respectively.
See
above
. The same will happen if stack size is
changed via RCLM.
SSIZE8
SSIZE?
…
\
Returns the number of stack levels accessible.
STATUS
\PRG
Shows the status of all user flags, similar to
STATUS on
HP-16C
. See
above
.