| Type | Range |
|---|---|
| float | approximately 1.2-38 to 3.438 |
| double, long double | approximately 2.2-308 to 1.8308 |
The declarator for a simple floating point declaration is an identifier. Initialize a simple floating point variable with a float constant or with a variable or expression that evaluates to an integer or floating point number.
The representation and alignment requirements of a complex type are the same as an array type containing two elements of the corresponding real type. The real part is equal to the first element; the imaginary part is equal to the second element.
The equality and inequality operators have the same behavior as for real types. None of the relational operators may have a complex type as an operand.
As
an extension to C99 and Standard C++,
complex numbers may also be operands to the unary operators ++ (increment), -- (decrement),
and ~ (bitwise negation).