realpart, imagpart (Function)

Syntax:

Arguments and Values:

number—a number.

real—a real.

Description:

realpart and imagpart return the real and imaginary parts of number respectively. If number is real, then realpart returns number and imagpart returns (* 0 number), which has the effect that the imaginary part of a rational is 0 and that of a float is a floating-point zero of the same format.

Examples:

 (realpart #c(23 41)) → 23
 (imagpart #c(23 41.0)) → 41.0
 (realpart #c(23 41.0)) → 23.0
 (imagpart 23.0) → 0.0

Exceptional Situations:

Should signal an error of type type-error if number is not a number.

See Also:

complex (Function)