Section: Elementary Functions
y = real(x)
where x is an n-dimensional array of numerical type. The output
is the same numerical type as the input, unless the input is complex
or dcomplex. For complex inputs, the real part is a floating
point array, so that the return type is float. For dcomplex
inputs, the real part is a double precision floating point array, so that
the return type is double. The real function does
nothing to real and integer types.
real applied to a complex scalar.
--> real(3+4*i) ans = 3
The real function has no effect on real arguments:
--> real([2,3,4]) ans = 2 3 4
For a double-precision complex array,
--> real([2.0+3.0*i,i]) ans = 2 0