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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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/* CAPSULE B:
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This might be a capsule which defines how array descriptors are laid
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out - could vary from platform to platform - bound by TDF linking
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to capsules produced from Fortran.
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*/
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Struct Desc (BASE:Ptr Double, LB:Int, UB:Int,
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STRIDE:offset(alignment(Double), alignment(Double)));
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/* Desc is a token giving the shape of of a 1-d array pointer;
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BASE is token which extracts the base pointer from a Desc EXP
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.BASE is the offset of the base pointer from the start of a Desc
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etc for LB,UB and STRIDE
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*/
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Tokdef SIZE = [e:EXP]EXP
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( STRIDE[e] .* ((UB[e] - LB[e])+ 1(Int)) );
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/* SIZE is a token which evaluates the "size" of an array from its descriptor
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*/
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Tokdef Make_Desc = [base:EXP, l:EXP, u:EXP, s:EXP]EXP
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Cons[shape_offset(Desc)]
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( .BASE:base, .LB:l, .UB:u, .STRIDE:s);
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/* constructs a descriptor from its components */
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Tokdef Local_array = [l:EXP, u:EXP, s:SHAPE]EXP
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EXP: Make_Desc[local_alloc( Sizeof(s) .* ((u - l)+ 1(Int))),
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l, u, Sizeof(s)];
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/* define a 1-d array of shape s */
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Keep (Desc, BASE, LB, UB, STRIDE, SIZE, Make_Desc, Local_array)
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