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(* The rounding settings were not being carried over correctly between the RTS
and compiled code. *)
fun check x = if x then () else raise Fail "Wrong";
open IEEEReal;
exception NotImplemented;
(* setRoundingMode may raise an exception if it isn't implemented or
only permits certain rounding modes. *)
let
val () = setRoundingMode(TO_POSINF) handle Fail _ => raise NotImplemented
val () = check(getRoundingMode() = TO_POSINF);
val pos = 1.0/3.0;
val () = check(pos * 3.0 > 1.0);
val neg = ~1.0/3.0;
val () = check(neg * 3.0 > ~1.0)
in
()
end handle NotImplemented => ();
let
val () = setRoundingMode(TO_NEGINF) handle Fail _ => raise NotImplemented
val () = check(getRoundingMode() = TO_NEGINF);
val pos = 1.0/3.0;
val () = check(pos * 3.0 < 1.0);
val neg = ~1.0/3.0;
val () = check(neg * 3.0 < ~1.0);
in
()
end handle NotImplemented => ();
let
val () = setRoundingMode(TO_ZERO) handle Fail _ => raise NotImplemented
val () = check(getRoundingMode() = TO_ZERO);
val pos = 1.0/3.0;
val () = check(pos * 3.0 < 1.0);
val neg = ~1.0/3.0;
val () = check(neg * 3.0 > ~1.0);
val () = check(Real.==(~neg, pos));
in
()
end handle NotImplemented => ();
let
val () = setRoundingMode(TO_NEAREST) handle Fail _ => raise NotImplemented
val () = check(getRoundingMode() = TO_NEAREST);
val pos = 1.0/3.0;
val neg = ~1.0/3.0;
val () = check(Real.==(~neg, pos));
in
()
end handle NotImplemented => ();
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