Detaille Octave created MATH-1289: ------------------------------------- Summary: Incorrect calculation in org.apache.commons.math3.complex.Complex#multiply Key: MATH-1289 URL: https://issues.apache.org/jira/browse/MATH-1289 Project: Commons Math Issue Type: Bug Affects Versions: 3.5 Environment: Linux 3.16.0-44-generic #59-Ubuntu SMP Tue Jul 7 02:07:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
java version "1.8.0_45" Java(TM) SE Runtime Environment (build 1.8.0_45-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode) Reporter: Detaille Octave Hello guys! If think there is a bug in the org.apache.commons.math3.complex.Complex#multiply method Line 536 & 537 below are not correct {code:title=Complex.java|borderStyle=solid} return createComplex(real * factor.real - imaginary * factor.imaginary, real * factor.imaginary + imaginary * factor.real); {code} It should be {code:title=Complex.java|borderStyle=solid} return createComplex(real * factor.real + imaginary * factor.imaginary, imaginary * factor.real-real * factor.imaginary); {code} Can you confirm that? Or do I miss something? Thanks a lot (also, for this excellent library). Best, Octave -- This message was sent by Atlassian JIRA (v6.3.4#6332)