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Imaginary literals are described by the following lexical definitions:
| imagnumber | ::= | (floatnumber | intpart) ("j" | "J") |
An imaginary literal yields a complex number with a real part of
0.0. Complex numbers are represented as a pair of floating point
numbers and have the same restrictions on their range. To create a
complex number with a nonzero real part, add a floating point number
to it, e.g., (3+4j). Some examples of imaginary literals:
3.14j 10.j 10j .001j 1e100j 3.14e-10j
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