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Add explicit definitions for abs_{real,int} #750

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Add explicit definitions for abs_{real,int} #750

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7 changes: 7 additions & 0 deletions src/preludes/ria.ae
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Expand Up @@ -88,6 +88,13 @@ theory Real_of_Int extends RIA =

end

(* Outside of the theories because it is ignored otherwise. *)
axiom abs_real_def :
forall x : real [ abs_real(x) ]. abs_real(x) = if 0.0 <= x then x else -x

axiom abs_int_def :
forall x : int [ abs_int(x) ]. abs_int(x) = if 0 <= x then x else -x

theory ABS extends RIA =

axiom abs_real_pos :
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