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Article contents:[[tags: manual]] [[toc:]] == Module (scheme complex) R7RS Operations on complex numbers. <procedure>(make-rectangular x[1] x[2])</procedure><br> <procedure>(make-polar x[3] x[4])</procedure><br> <procedure>(real-part z)</procedure> <procedure>(imag-part z)</procedure> <procedure>(magnitude z)</procedure> <procedure>(angle z)</procedure> Let x[1], x[2], x[3] and x[4] be real numbers and z be a complex number such that z = x[1] + x[2] * i = x[3] * e^(i * x[4]) Then all of (make-rectangular x[1] x[2]) ==> z (make-polar x[3] x[4]) ==> z (real-part z) ==> x[1] (imag-part z) ==> x[2] (magnitude z) ==> |x[3]| (angle z) ==> x[angle] are true, where −π ≤ x[angle] ≤ π with x[angle] = x[4] + 2 * π * n for some integer n. The make-polar procedure may return an inexact complex number even if its arguments are exact. The real-part and imag-part procedures may return exact real numbers when applied to an inexact complex number if the corresponding argument passed to make-rectangular was exact. Rationale: The magnitude procedure is the same as abs for a real argument, but abs is in the base library, whereas magnitude is in the optional complex library. --- Previous: [[Module (scheme char)]] Next: [[Module (scheme cxr)]] Description of your changes:

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