Merge branch 'rtoy-issue-77-tests-sqrt-exceptional' into 'master'

Fix #77: Add tests for sqrt of exceptional values

Closes #77

See merge request !49
2 jobs for master in 11 minutes and 50 seconds
Status Name Job ID Coverage
  Test
passed linux-runner #3006
linux

00:08:00

passed osx-runner #3007
osx

00:11:50