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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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abstract.pl
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===========
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This file assumes that the parameters to the functions defined here are
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64-bit integers:
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Tokdef INT64 = [] SHAPE integer (var_width(true, 64));
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Tokdef UINT64 = [] SHAPE integer (var_width(false, 64));
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If it required that structures be passed, changing these tokens definitions
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to:
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Tokdef INT64 = [] SHAPE STRUCT_64;
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Tokdef UINT64 = [] SHAPE USTRUCT_64;
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(and putting them in an appropriate place further down the file) should
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produce the required behaviour.
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*/
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/*
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** abstract.pl
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**
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** This file contains PL_TDF token definitions which
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** are declare in the PL_TDF file abstract.ph.
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*/
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/* Define the generic 32-bit signed and unsigned types */
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Tokdef ~INT32 = [] VARIETY var_width (true, 32);
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Tokdef INT32 = [] SHAPE integer(~INT32);
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Tokdef ~UINT32 = [] VARIETY var_width (false, 32);
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Tokdef UINT32 = [] SHAPE integer(~UINT32);
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/* Define the new types for 64-bit integers and */
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/* Macros for extracting the high- and low-32 bits */
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Tokdef INT64 = [] SHAPE integer (var_width(true, 64));
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Tokdef UINT64 = [] SHAPE integer (var_width(false, 64));
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/* Define the widest floating variety - not possibe in C */
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/* These are defined in the target-dependent tokens library */
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Tokdec .~rep_fv : [NAT] FLOATING_VARIETY;
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Tokdec .~rep_fv_width : [NAT] NAT;
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Tokdec rep_fv : [NAT] FLOATING_VARIETY;
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Tokdef rep_fv = [n:NAT] FLOATING_VARIETY
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FLOATING_VARIETY ? ( ? { ? ((+ .~rep_fv_width [
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computed_nat(1(Int) + (+ n(Int)))] (Int)) == 0(Int));
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1(Int)
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0(Int)
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},
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.~rep_fv [n],
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rep_fv [computed_nat(1(Int) + (+ n(Int)))]
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);
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Tokdef ~BigFloat = [] FLOATING_VARIETY rep_fv [1];
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Tokdef BigFloat = [] SHAPE floating(~BigFloat);
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/* Macros for extracting the high- and low-32 bits */
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/* (These necessarily differ from the C equivalents) */
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/* This is a boolean preserved by the .c files */
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Tokdec BIGEND_INT64 : [] EXP;
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Tokdef s1 = [] SHAPE SHAPE ? ( BIGEND_INT64, INT32, UINT32 );
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Tokdef s2 = [] SHAPE SHAPE ? ( BIGEND_INT64, UINT32, INT32 );
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Struct STRUCT_64 (x1 : s1, x2 : s2 );
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Struct STRUCT_U64 (x3 : UINT32, x4 : UINT32 );
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Tokdef hi_32 = [a:EXP] EXP EXP ? ( BIGEND_INT64, x1[a], x2[a]);
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Tokdef lo_32 = [a:EXP] EXP EXP ? ( BIGEND_INT64, x2[a], x1[a]);
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Tokdef hi_u32 = [a:EXP] EXP EXP ? ( BIGEND_INT64, x3[a], x4[a]);
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Tokdef lo_u32 = [a:EXP] EXP EXP ? ( BIGEND_INT64, x4[a], x3[a]);
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Tokdef .hi_32 = [] EXP EXP ? ( BIGEND_INT64, .x1, .x2);
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Tokdef .lo_32 = [] EXP EXP ? ( BIGEND_INT64, .x2, .x1);
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Tokdef .hi_u32 = [] EXP EXP ? ( BIGEND_INT64, .x3, .x4);
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Tokdef .lo_u32 = [] EXP EXP ? ( BIGEND_INT64, .x4, .x3);
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/*
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Struct STRUCT_64 (hi_32 : INT32, lo_32 : UINT32 );
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Struct STRUCT_U64 (hi_u32 : UINT32, lo_u32 : UINT32 );
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*/
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Struct Union64 ( PARAM : INT64);
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Struct UnionU64 (UPARAM : UINT64);
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Tokdef TDF_INT64 = [] SHAPE
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compound (shape_offset(INT64) .max. shape_offset(STRUCT_64));
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/* 64-bit constants used in the implementation */
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Tokdef const_0 = [] EXP
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Cons [shape_offset(TDF_INT64)] (.lo_32: 0(~UINT32), .hi_32: 0(~INT32));
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Tokdef const_u0 = [] EXP
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Cons [shape_offset(TDF_INT64)] (.lo_u32: 0(~UINT32), .hi_u32: 0(~INT32));
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Tokdef const_1 = [] EXP
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Cons [shape_offset(TDF_INT64)] (.lo_32: 1(~UINT32), .hi_32: 0(~INT32));
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Tokdef const_u1 = [] EXP
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Cons [shape_offset(TDF_INT64)] (.lo_u32: 1(~UINT32), .hi_u32: 0(~INT32));
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Keep ( ~INT32, ~UINT32, INT32, UINT32, INT64, UINT64, TDF_INT64,
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~BigFloat, BigFloat, PARAM, .PARAM, UPARAM, .UPARAM,
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hi_32, lo_32, hi_u32, lo_u32, .hi_32, .lo_32, .hi_u32, .lo_u32,
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const_0, const_u0, const_1, const_u1)
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