tcfail067.hs:65: Warning:
    No explicit method nor default method for `PrelBase.signum'
    in an instance declaration for `PrelBase.Num'
 
tcfail067.hs:65: Warning:
    No explicit method nor default method for `PrelBase.abs'
    in an instance declaration for `PrelBase.Num'

 
tcfail067.hs:65:
    Could not deduce `PrelBase.Ord a'
	(arising from use of `SubRange' at tcfail067.hs:65)
	from the context: (PrelBase.Num (SubRange _97), PrelBase.Num _97, PrelBase.Eq (SubRange _97), PrelBase.Show (SubRange _97), PrelBase.Eq (SubRange _97), PrelBase.Show (SubRange _97))
    Probable cause: missing `PrelBase.Ord a'
		    in instance declaration context
    When checking the methods of an instance declaration
 
tcfail067.hs:65:
    Could not deduce `PrelBase.Show (SubRange a)'
	(arising from an instance declaration at tcfail067.hs:65)
	from the context: (PrelBase.Num _97)
    Probable cause: missing `PrelBase.Show (SubRange a)'
		    in instance declaration context
		    or missing instance declaration for `PrelBase.Show (SubRange a)'
    When checking the superclasses of an instance declaration
 
tcfail067.hs:74:
    Could not deduce `PrelBase.Ord a'
	(arising from use of `SubRange' at tcfail067.hs:74)
	from the context: (PrelBase.Num a)
    Probable cause: missing `PrelBase.Ord a'
		    in type signature for `numSubRangeBinOp'
    When checking the type signature(s) for `numSubRangeBinOp'


Compilation had errors