Copyright (C) 1994, Digital Equipment Corp.File: Trunc.m3 Last Modified On Mon Sep 26 09:15:50 PDT 1994 By kalsow Modified On Tue Apr 10 10:57:52 1990 By muller
MODULE; IMPORT CG, CallExpr, Expr, Type, Procedure, Ceiling, Int, ReelExpr; VAR Z: CallExpr.MethodList; PROCEDURE Trunc Check (ce: CallExpr.T; VAR cs: Expr.CheckState) = BEGIN Ceiling.DoCheck ("TRUNC", ce, cs); END Check; PROCEDURECompile (ce: CallExpr.T) = VAR e := ce.args[0]; BEGIN Expr.Compile (e); CG.Trunc (Type.CGType (Expr.TypeOf (e))); END Compile; PROCEDUREFold (ce: CallExpr.T): Expr.T = VAR e, x: Expr.T; BEGIN e := Expr.ConstValue (ce.args[0]); IF (e = NIL) THEN RETURN NIL ELSIF ReelExpr.Trunc (e, x) THEN RETURN x; ELSE (* bogus *) RETURN NIL; END; END Fold; PROCEDUREInitialize () = BEGIN Z := CallExpr.NewMethodList (1, 1, TRUE, FALSE, TRUE, Int.T, NIL, CallExpr.NotAddressable, Check, CallExpr.PrepArgs, Compile, CallExpr.NoLValue, CallExpr.NoLValue, CallExpr.NotBoolean, CallExpr.NotBoolean, Fold, CallExpr.IsNever, (* writable *) CallExpr.IsNever, (* designator *) CallExpr.NotWritable (* noteWriter *)); Procedure.Define ("TRUNC", Z, TRUE); END Initialize; BEGIN END Trunc.