[comp.sys.next] Computing with complex numbers

finn@theory.tn.cornell.edu (Lee Samuel Finn) (03/19/91)

In doing straight arithmetic calculations (no trancendentals) on
complex numbers using Absoft FORTRAN, I've noted a huge overhead
credited to system time. If I do the real and imaginary calculations 
seperately, I find that the overhead disappears. Does anyone have
a clue as to what is going on? Are there 68882 instructions that do
complex arithmetic that are trapped in the kernel on an '040? 

Thanks in advance,

lsf@astrosun.tn.cornell.edu