On Wed, May 2, 2012 6:11 am, Bo Jacoby wrote: > Hello J'ers > > Even if a complex number is actually real it may display nonzero imaginary > part because of round-off errors. Adding and subtracting 1e6j1e6 removes > the round-off error, but is there a better or more general solution?
J uses the APL definition of complex floor, so normal rounding works. <.1j0.00000001+0.5 1 _1+<.1j0.00000001+0.5 0 -- Edward Mokurai (默雷/निशब्दगर्ज/نشبدگرج) Cherlin Silent Thunder is my name, and Children are my nation. The Cosmos is my dwelling place, the Truth my destination. http://wiki.sugarlabs.org/go/Replacing_Textbooks -- Edward Mokurai (默雷/निशब्दगर्ज/نشبدگرج) Cherlin Silent Thunder is my name, and Children are my nation. The Cosmos is my dwelling place, the Truth my destination. http://wiki.sugarlabs.org/go/Replacing_Textbooks ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
