tree b9ae6675dc9f05eab32f4bd45c71825373bc6af9
parent 598b578b84ead47e0ede20de6565a8a6208b8363
author Alex Herbert <aherbert@apache.org> 1578688771 +0000
committer Alex Herbert <aherbert@apache.org> 1578688771 +0000

Update x2y2m1 to use Ogita's dot-product summation in 3-fold precision.

This has been tested with 1,000,000,000 random cis numbers with no ULP
errors. The previous summation using Dekker's 2-fold precision sum had
observed ULPs > 65000.

Hard examples of cis-numbers have been added to the Complex edge-case
test.