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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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/**********************************************************************
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$Author: pwe $
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$Date: 1998/02/11 16:56:37 $
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$Revision: 1.2 $
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$Log: check.h,v $
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* Revision 1.2 1998/02/11 16:56:37 pwe
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* corrections
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*
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* Revision 1.1.1.1 1998/01/17 15:55:46 release
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* First version to be checked into rolling release.
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*
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* Revision 1.1 1995/04/06 10:44:05 currie
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* Initial revision
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*
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***********************************************************************/
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/*******************************************************************
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checkdecs.h
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The routine check performs the bottom-up TDF-to-TDF optimising
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transformations. When a new exp is created check is applied to
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see if a recognised situation has arisen. check assumes that
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all components of this new exp have already had check applied to them.
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It returns 1 if it has made a change, 0 if not.
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hold_check holds an exp as the son of a dummy exp and then
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applies check. the need for this operation is explained in
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the overall documentation.
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eq_exp compares two exp for equality of effect.
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dochvar takes the int, i, and delivers the number which results from
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changing its variety to that specified by the shape, t.
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*******************************************************************/
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extern int check PROTO_S ((exp e, exp scope));
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extern int eq_exp PROTO_S ((exp a, exp b));
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extern int dochvar PROTO_S ((int i, shape t));
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extern int dochvar_e PROTO_S ((int v, int big, shape f, shape t, int* pr));
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extern exp hold_check PROTO_S ((exp e));
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extern exp hold_const_check PROTO_S ((exp e));
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extern exp hold PROTO_S ((exp e));
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extern int docmp_f PROTO_S ((int test_no, exp a, exp b));
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extern ntest int_inverse_ntest[];
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extern ntest real_inverse_ntest[];
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extern ntest exchange_ntest[];
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