Detrend: wrong result with parameter equal=false [Bug #9961]

4 jobs for develop in 33 minutes and 10 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed build-gcc64 #16544
xen mistral

00:05:36

passed build-intel18 #16545
xen mistral

00:18:46

 
  Check
passed check-gcc64 #16546
xen mistral

00:07:25

passed check-intel18 #16547
xen mistral

00:14:24