realpart, imagpart

realpart, imagpart Function

Syntax:

realpart number → real

imagpart number → real

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

Expanded Reference: realpart, imagpart

tip

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(realpart, imagpart )