Diffast_misc.Xprintval failure : ('a, unit, string, 'b) format4 -> 'aval message : ('a, unit, string, unit) format4 -> 'aval verbose : bool -> ('a, unit, string, unit) format4 -> 'aval warning :
?out:out_channel ->
?head:string ->
('a, unit, string, unit) format4 ->
'aval error :
?out:out_channel ->
?head:string ->
('a, unit, string, unit) format4 ->
'aval println : ('a, unit, string, unit) format4 -> 'a