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y = + x
y = - x
+
( -
) above results
in
z
equal to
x
(minus
x
).
x
can be a_float
or a2float
and the result
z
will have the same type as
x
.
x
may be
a numpy.array
with elements of type
a_float
or a2float
.
In this case, the result
z
is an array with the same shape
and element type as
x
.