Improved numerical error checking in the permutation tests
Improved numerical error checking in the permutation tests

bast/xcfun,bast/xcfun,dftlibs/xcfun,dftlibs/xcfun,robertodr/xcfun,robertodr/xcfun,bast/xcfun,dftlibs/xcfun,robertodr/xcfun,bast/xcfun,dftlibs/xcfun,robertodr/xcfun