[Bug fortran/60646] Investigate improved complex division algorithms

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60646

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Created attachment 32456
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32456&action=edit
an "improved" complex division

Another variation on the same theme! 

The test prints the results for the default complex division, the expected
results, and the difference between the "improved" version and the expected one
(note that with -O1 and above the constants are folded).