Returns the arithmetic means, pushing
on the stack. See
also s, SERR, and .
Returns the geometric means, pushing
on the
stack. See also ,
m
, and
P
.
Returns the weighted arithmetic mean
Returns a forecast x for a given y (in X) follow-
ing the fit model chosen. See L.R. for more.
Return the factorial, equaling Γ(x + 1) .
Interprets x as character code. Appends the re-
spective character to alpha, similar to XTOA in
HP-42S.
Swaps the contents of X and r , in analogy to
xy.
Swaps x and y , performing ReIm if a com-
plex operation was executed immediately be-
fore. See above for details.
Compare x with a. E.g. x < ? will
compare x with the contents of register K , and
will be listed as in a program. See the
examples given in the addressing table above
for more.
x ? will be true if the rounded values of x and
a are equal (see ROUND).
a and a com-
pare the complex number x + i y as explained
in the addressing table above.
The signed tests x = +0 ? and x = 0 ? are
meant for integer modes 1COMPL and SIGNMT,
and for DECM if flag D is set. Then, e.g. 0 di-
vided by -7 will display -0.