real-part, imag-part - real and imaginary parts of a complex number
(import (rnrs)) ;R6RS
(import (rnrs base)) ;R6RS
(import (scheme r5rs)) ;R7RS
(import (scheme complex)) ;R7RS, optional library
If z is the complex number a+bi, then the
See the notes in
These procedures return a single value, a real number.
(real-part 1.1+2.2i) => 1.1 ;approximately
(imag-part 1.1+2.2i) => 2.2 ;approximately
(real-part -2+3i) => -2 or -2.0
(imag-part -2+3i) => 3 or 3.0
(imag-part 42) => 0 or 0.0
All R6RS implementations support complex numbers. Implementations of
the other RnRS reports may or may not support complex numbers. In such
cases these procedures will be missing.
This procedure can raise exceptions with the following condition types:
- &assertion (R6RS)
The wrong number of arguments was passed or an argument was outside its domain.
The assertions described above are errors.
Implementations may signal an error, extend the procedure's
domain of definition to include such arguments,
or fail catastrophically.
These procedures first appeared in R2RS, which got them from Common Lisp,
where they are called
This page is part of the
It includes materials from the RnRS documents.
More information can be found at
Markup created by unroff 1.0sc, March 04, 2023.