A *complex constant* approximates the value of a
mathematical complex number. The constant is a pair of real or
integer values, separated by a comma, and enclosed in parentheses.
The first constant represents the real part of that number; the
second constant represents the imaginary part.

The following is the general form of a complex constant:

- (
*c*,*c*) *c*

Is as follows:

- For COMPLEX(4) constants,
*c*is an integer or REAL(4) constant. - For COMPLEX(8) constants,
*c*is an integer, REAL(4) constant, or DOUBLE PRECISION (REAL(8)) constant. At least one of the pair must be DOUBLE PRECISION. - For COMPLEX(16) constants (VMS, U*X),
*c*is an integer, REAL(4) constant, REAL(8) constant, or REAL(16) constant. At least one of the pair must be a REAL(16) constant.

- For COMPLEX(4) constants,

Note that the comma and parentheses are required.

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