| [658] | 1 | /***************************************************************************
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| 2 | * blitz/array/map.h Declaration of the ArrayIndexMapping class
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| 3 | *
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| 4 | * $Id: map.h,v 1.1.1.1 1999-11-26 16:37:07 ansari Exp $
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| 5 | *
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| 6 | * Copyright (C) 1997,1998 Todd Veldhuizen <tveldhui@seurat.uwaterloo.ca>
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version 2
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| 11 | * of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * Suggestions: blitz-suggest@cybervision.com
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| 19 | * Bugs: blitz-bugs@cybervision.com
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| 20 | *
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| 21 | * For more information, please see the Blitz++ Home Page:
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| 22 | * http://seurat.uwaterloo.ca/blitz/
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| 23 | *
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| 24 | ***************************************************************************
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| 25 | * $Log: not supported by cvs2svn $
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| 26 | * Revision 1.1.1.1 1999/04/09 17:59:03 ansari
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| 27 | * Creation module DPC/Blitz (blitz 0.4) Reza 09/04/99
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| 28 | *
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| 29 | * Revision 1.2 1998/03/14 00:04:47 tveldhui
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| 30 | * 0.2-alpha-05
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| 31 | *
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| 32 | * Revision 1.1 1997/07/16 14:51:20 tveldhui
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| 33 | * Update: Alpha release 0.2 (Arrays)
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| 34 | *
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| 35 | */
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| 36 |
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| 37 | /*
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| 38 | * ArrayIndexMapping is used to implement tensor array notation. For
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| 39 | * example:
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| 40 | *
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| 41 | * Array<float, 2> A, B;
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| 42 | * firstIndex i;
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| 43 | * secondIndex j;
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| 44 | * thirdIndex k;
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| 45 | * Array<float, 3> C = A(i,j) * B(j,k);
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| 46 | *
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| 47 | * For expression templates purposes, something like B(j,k) is represented
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| 48 | * by an instance of class ArrayIndexMapping. This class maps an array onto
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| 49 | * the destination array coordinate system, e.g. B(j,k) -> C(i,j,k)
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| 50 | */
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| 51 |
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| 52 | #ifndef BZ_ARRAYMAP_H
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| 53 | #define BZ_ARRAYMAP_H
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| 54 |
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| 55 | #ifndef BZ_ARRAY_H
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| 56 | #error <blitz/array/map.h> must be included via <blitz/array.h>
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| 57 | #endif
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| 58 |
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| 59 | BZ_NAMESPACE(blitz)
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| 60 |
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| 61 | /*
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| 62 | * _bz_doArrayIndexMapping is a helper class. It is specialized for
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| 63 | * ranks 1, 2, 3, ..., 11.
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| 64 | */
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| 65 |
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| 66 | template<int N_rank>
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| 67 | struct _bz_doArrayIndexMapping {
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| 68 | template<class T_numtype, int N_destRank>
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| 69 | static T_numtype map(const Array<T_numtype, N_rank>&,
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| 70 | const TinyVector<int,N_destRank>&, int, int, int, int, int, int,
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| 71 | int, int, int, int, int)
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| 72 | {
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| 73 | // If you try to use an array index mapping on an array with
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| 74 | // rank greater than 11, then you'll get a precondition failure
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| 75 | // here.
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| 76 | BZPRECONDITION(0);
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| 77 | }
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| 78 | };
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| 79 |
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| 80 | template<>
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| 81 | struct _bz_doArrayIndexMapping<1> {
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| 82 | template<class T_numtype, int N_destRank>
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| 83 | static T_numtype map(const Array<T_numtype, 1>& array,
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| 84 | const TinyVector<int,N_destRank>& index, int i0, int, int, int, int,
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| 85 | int, int, int, int, int, int)
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| 86 | {
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| 87 | return array(index[i0]);
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| 88 | }
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| 89 | };
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| 90 |
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| 91 |
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| 92 | template<>
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| 93 | struct _bz_doArrayIndexMapping<2> {
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| 94 | template<class T_numtype, int N_destRank>
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| 95 | static T_numtype map(const Array<T_numtype, 2>& array,
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| 96 | const TinyVector<int,N_destRank>& index, int i0, int i1, int,
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| 97 | int, int, int, int, int, int, int, int)
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| 98 | {
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| 99 | return array(index[i0], index[i1]);
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| 100 | }
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| 101 | };
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| 102 |
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| 103 | template<>
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| 104 | struct _bz_doArrayIndexMapping<3> {
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| 105 | template<class T_numtype, int N_destRank>
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| 106 | static T_numtype map(const Array<T_numtype, 3>& array,
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| 107 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 108 | int, int, int, int, int, int, int, int)
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| 109 | {
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| 110 | return array(index[i0], index[i1], index[i2]);
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| 111 | }
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| 112 | };
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| 113 |
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| 114 | template<>
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| 115 | struct _bz_doArrayIndexMapping<4> {
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| 116 | template<class T_numtype, int N_destRank>
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| 117 | static T_numtype map(const Array<T_numtype, 4>& array,
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| 118 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 119 | int i3, int, int, int, int, int, int, int)
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| 120 | {
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| 121 | return array(index[i0], index[i1], index[i2], index[i3]);
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| 122 | }
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| 123 | };
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| 124 |
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| 125 | template<>
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| 126 | struct _bz_doArrayIndexMapping<5> {
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| 127 | template<class T_numtype, int N_destRank>
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| 128 | static T_numtype map(const Array<T_numtype, 5>& array,
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| 129 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 130 | int i3, int i4, int, int, int, int, int, int)
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| 131 | {
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| 132 | return array(index[i0], index[i1], index[i2], index[i3], index[i4]);
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| 133 | }
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| 134 | };
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| 135 |
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| 136 | template<>
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| 137 | struct _bz_doArrayIndexMapping<6> {
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| 138 | template<class T_numtype, int N_destRank>
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| 139 | static T_numtype map(const Array<T_numtype, 6>& array,
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| 140 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 141 | int i3, int i4, int i5, int, int, int, int, int)
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| 142 | {
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| 143 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 144 | index[i5]);
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| 145 | }
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| 146 | };
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| 147 |
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| 148 | template<>
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| 149 | struct _bz_doArrayIndexMapping<7> {
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| 150 | template<class T_numtype, int N_destRank>
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| 151 | static T_numtype map(const Array<T_numtype, 7>& array,
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| 152 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 153 | int i3, int i4, int i5, int i6, int, int, int, int)
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| 154 | {
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| 155 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 156 | index[i5], index[i6]);
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| 157 | }
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| 158 | };
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| 159 |
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| 160 | template<>
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| 161 | struct _bz_doArrayIndexMapping<8> {
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| 162 | template<class T_numtype, int N_destRank>
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| 163 | static T_numtype map(const Array<T_numtype, 8>& array,
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| 164 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 165 | int i3, int i4, int i5, int i6, int i7, int, int, int)
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| 166 | {
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| 167 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 168 | index[i5], index[i6], index[i7]);
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| 169 | }
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| 170 | };
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| 171 |
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| 172 | template<>
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| 173 | struct _bz_doArrayIndexMapping<9> {
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| 174 | template<class T_numtype, int N_destRank>
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| 175 | static T_numtype map(const Array<T_numtype, 9>& array,
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| 176 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 177 | int i3, int i4, int i5, int i6, int i7, int i8, int, int)
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| 178 | {
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| 179 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 180 | index[i5], index[i6], index[i7], index[i8]);
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| 181 | }
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| 182 | };
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| 183 |
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| 184 | template<>
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| 185 | struct _bz_doArrayIndexMapping<10> {
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| 186 | template<class T_numtype, int N_destRank>
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| 187 | static T_numtype map(const Array<T_numtype, 10>& array,
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| 188 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 189 | int i3, int i4, int i5, int i6, int i7, int i8, int i9, int)
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| 190 | {
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| 191 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 192 | index[i5], index[i6], index[i7], index[i8], index[i9]);
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| 193 | }
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| 194 | };
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| 195 |
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| 196 | template<>
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| 197 | struct _bz_doArrayIndexMapping<11> {
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| 198 | template<class T_numtype, int N_destRank>
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| 199 | static T_numtype map(const Array<T_numtype, 11>& array,
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| 200 | const TinyVector<int,N_destRank>& index, int i0, int i1, int i2,
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| 201 | int i3, int i4, int i5, int i6, int i7, int i8, int i9, int i10)
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| 202 | {
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| 203 | return array(index[i0], index[i1], index[i2], index[i3], index[i4],
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| 204 | index[i5], index[i6], index[i7], index[i8], index[i9],
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| 205 | index[i10]);
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| 206 | }
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| 207 | };
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| 208 |
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| 209 | template<class P_numtype, int N_rank, int N_map0, int N_map1=0, int N_map2=0,
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| 210 | int N_map3=0, int N_map4=0, int N_map5=0, int N_map6=0, int N_map7=0,
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| 211 | int N_map8=0, int N_map9=0, int N_map10=0>
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| 212 | class ArrayIndexMapping {
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| 213 | public:
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| 214 | typedef P_numtype T_numtype;
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| 215 | typedef const Array<T_numtype,N_rank>& T_ctorArg1;
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| 216 | typedef int T_ctorArg2; // dummy
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| 217 |
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| 218 | /*
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| 219 | * This enum block finds the maximum of the N_map0, N_map1, ..., N_map10
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| 220 | * parameters and stores it in maxRank10. The rank of the expression is
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| 221 | * then maxRank10 + 1, since the IndexPlaceholders start at 0 rather than
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| 222 | * 1.
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| 223 | */
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| 224 | enum {
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| 225 | maxRank1 = (N_map0 > N_map1) ? N_map0 : N_map1,
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| 226 | maxRank2 = (N_map2 > maxRank1) ? N_map2 : maxRank1,
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| 227 | maxRank3 = (N_map3 > maxRank2) ? N_map3 : maxRank2,
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| 228 | maxRank4 = (N_map4 > maxRank3) ? N_map4 : maxRank3,
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| 229 | maxRank5 = (N_map5 > maxRank4) ? N_map5 : maxRank4,
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| 230 | maxRank6 = (N_map6 > maxRank5) ? N_map6 : maxRank5,
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| 231 | maxRank7 = (N_map7 > maxRank6) ? N_map7 : maxRank6,
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| 232 | maxRank8 = (N_map8 > maxRank7) ? N_map8 : maxRank7,
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| 233 | maxRank9 = (N_map9 > maxRank8) ? N_map9 : maxRank8,
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| 234 | maxRank10 = (N_map10 > maxRank9) ? N_map10 : maxRank9
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| 235 | };
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| 236 |
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| 237 | enum { numArrayOperands = 1, numIndexPlaceholders = 1,
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| 238 | rank = maxRank10 + 1 };
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| 239 |
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| 240 | ArrayIndexMapping(const Array<T_numtype, N_rank>& array)
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| 241 | : array_(array)
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| 242 | {
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| 243 | }
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| 244 |
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| 245 | ArrayIndexMapping(const ArrayIndexMapping<T_numtype,N_rank,N_map0,
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| 246 | N_map1,N_map2,N_map3,N_map4,N_map5,N_map6,N_map7,N_map8,N_map9,
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| 247 | N_map10>& z)
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| 248 | : array_(z.array_)
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| 249 | {
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| 250 | }
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| 251 |
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| 252 | #ifdef BZ_ARRAY_EXPR_PASS_INDEX_BY_VALUE
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| 253 | template<int N_destRank>
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| 254 | T_numtype operator()(TinyVector<int, N_destRank> i)
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| 255 | {
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| 256 | return _bz_doArrayIndexMapping<N_rank>::map(array_, i,
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| 257 | N_map0, N_map1, N_map2, N_map3, N_map4, N_map5, N_map6,
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| 258 | N_map7, N_map8, N_map9, N_map10);
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| 259 | }
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| 260 | #else
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| 261 | template<int N_destRank>
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| 262 | T_numtype operator()(const TinyVector<int, N_destRank>& i)
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| 263 | {
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| 264 | return _bz_doArrayIndexMapping<N_rank>::map(array_, i,
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| 265 | N_map0, N_map1, N_map2, N_map3, N_map4, N_map5, N_map6,
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| 266 | N_map7, N_map8, N_map9, N_map10);
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| 267 | }
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| 268 | #endif
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| 269 |
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| 270 | int lbound(int rank)
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| 271 | {
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| 272 | if (N_map0 == rank)
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| 273 | return array_.lbound(0);
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| 274 | else if ((N_map1 == rank) && (N_rank > 1))
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| 275 | return array_.lbound(1);
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| 276 | else if ((N_map2 == rank) && (N_rank > 2))
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| 277 | return array_.lbound(2);
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| 278 | else if ((N_map3 == rank) && (N_rank > 3))
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| 279 | return array_.lbound(3);
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| 280 | else if ((N_map4 == rank) && (N_rank > 4))
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| 281 | return array_.lbound(4);
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| 282 | else if ((N_map5 == rank) && (N_rank > 5))
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| 283 | return array_.lbound(5);
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| 284 | else if ((N_map6 == rank) && (N_rank > 6))
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| 285 | return array_.lbound(6);
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| 286 | else if ((N_map7 == rank) && (N_rank > 7))
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| 287 | return array_.lbound(7);
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| 288 | else if ((N_map8 == rank) && (N_rank > 8))
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| 289 | return array_.lbound(8);
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| 290 | else if ((N_map9 == rank) && (N_rank > 9))
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| 291 | return array_.lbound(9);
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| 292 | else if ((N_map10 == rank) && (N_rank > 10))
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| 293 | return array_.lbound(10);
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| 294 | else
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| 295 | return INT_MIN; // tiny(int());
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| 296 | }
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| 297 |
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| 298 | int ubound(int rank)
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| 299 | {
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| 300 | if (N_map0 == rank)
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| 301 | return array_.ubound(0);
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| 302 | else if ((N_map1 == rank) && (N_rank > 1))
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| 303 | return array_.ubound(1);
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| 304 | else if ((N_map2 == rank) && (N_rank > 2))
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| 305 | return array_.ubound(2);
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| 306 | else if ((N_map3 == rank) && (N_rank > 3))
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| 307 | return array_.ubound(3);
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| 308 | else if ((N_map4 == rank) && (N_rank > 4))
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| 309 | return array_.ubound(4);
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| 310 | else if ((N_map5 == rank) && (N_rank > 5))
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| 311 | return array_.ubound(5);
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| 312 | else if ((N_map6 == rank) && (N_rank > 6))
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| 313 | return array_.ubound(6);
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| 314 | else if ((N_map7 == rank) && (N_rank > 7))
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| 315 | return array_.ubound(7);
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| 316 | else if ((N_map8 == rank) && (N_rank > 8))
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| 317 | return array_.ubound(8);
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| 318 | else if ((N_map9 == rank) && (N_rank > 9))
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| 319 | return array_.ubound(9);
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| 320 | else if ((N_map10 == rank) && (N_rank > 10))
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| 321 | return array_.ubound(10);
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| 322 | else
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| 323 | return INT_MAX; // huge(int());
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| 324 | }
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| 325 |
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| 326 | // If you have a precondition failure on this routine, it means
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| 327 | // you are trying to use stack iteration mode on an expression
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| 328 | // which contains an index placeholder. You must use index
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| 329 | // iteration mode instead.
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| 330 | int operator*()
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| 331 | {
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| 332 | BZPRECONDITION(0);
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| 333 | return 0;
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| 334 | }
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| 335 |
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| 336 | // See operator*() note
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| 337 | void push(int)
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| 338 | {
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| 339 | BZPRECONDITION(0);
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| 340 | }
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| 341 |
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| 342 | // See operator*() note
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| 343 | void pop(int)
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| 344 | {
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| 345 | BZPRECONDITION(0);
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| 346 | }
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| 347 |
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| 348 | // See operator*() note
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| 349 | void advance()
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| 350 | {
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| 351 | BZPRECONDITION(0);
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| 352 | }
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| 353 |
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| 354 | // See operator*() note
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| 355 | void advance(int)
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| 356 | {
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| 357 | BZPRECONDITION(0);
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| 358 | }
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| 359 |
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| 360 | // See operator*() note
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| 361 | void loadStride(int)
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| 362 | {
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| 363 | BZPRECONDITION(0);
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| 364 | }
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| 365 |
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| 366 | _bz_bool isUnitStride(int rank) const
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| 367 | {
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| 368 | BZPRECONDITION(0);
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| 369 | return false;
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| 370 | }
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| 371 |
|
|---|
| 372 | void advanceUnitStride()
|
|---|
| 373 | {
|
|---|
| 374 | BZPRECONDITION(0);
|
|---|
| 375 | }
|
|---|
| 376 |
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|---|
| 377 | _bz_bool canCollapse(int,int) const
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|---|
| 378 | { BZPRECONDITION(0); return _bz_false; }
|
|---|
| 379 |
|
|---|
| 380 | T_numtype operator[](int)
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|---|
| 381 | {
|
|---|
| 382 | BZPRECONDITION(0);
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|---|
| 383 | return T_numtype();
|
|---|
| 384 | }
|
|---|
| 385 |
|
|---|
| 386 | T_numtype fastRead(int)
|
|---|
| 387 | {
|
|---|
| 388 | BZPRECONDITION(0);
|
|---|
| 389 | return T_numtype();
|
|---|
| 390 | }
|
|---|
| 391 |
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|---|
| 392 | int suggestStride(int) const
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|---|
| 393 | {
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|---|
| 394 | BZPRECONDITION(0);
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|---|
| 395 | return 0;
|
|---|
| 396 | }
|
|---|
| 397 |
|
|---|
| 398 | _bz_bool isStride(int,int) const
|
|---|
| 399 | {
|
|---|
| 400 | BZPRECONDITION(0);
|
|---|
| 401 | return _bz_true;
|
|---|
| 402 | }
|
|---|
| 403 |
|
|---|
| 404 | template<int N_rank2>
|
|---|
| 405 | void moveTo(const TinyVector<int,N_rank2>& i)
|
|---|
| 406 | {
|
|---|
| 407 | BZPRECONDITION(0);
|
|---|
| 408 | return ;
|
|---|
| 409 | }
|
|---|
| 410 |
|
|---|
| 411 | void prettyPrint(string& str, prettyPrintFormat& format) const
|
|---|
| 412 | {
|
|---|
| 413 | // NEEDS_WORK-- do real formatting for reductions
|
|---|
| 414 | str += "map[NEEDS_WORK]";
|
|---|
| 415 | }
|
|---|
| 416 |
|
|---|
| 417 | template<class T_shape>
|
|---|
| 418 | _bz_bool shapeCheck(const T_shape& shape) const
|
|---|
| 419 | {
|
|---|
| 420 | // NEEDS_WORK-- do a real shape check (tricky)
|
|---|
| 421 | return _bz_true;
|
|---|
| 422 | }
|
|---|
| 423 |
|
|---|
| 424 | private:
|
|---|
| 425 | ArrayIndexMapping() { }
|
|---|
| 426 |
|
|---|
| 427 | const Array<T_numtype, N_rank>& array_;
|
|---|
| 428 | };
|
|---|
| 429 |
|
|---|
| 430 | BZ_NAMESPACE_END
|
|---|
| 431 |
|
|---|
| 432 | #endif // BZ_ARRAYMAP_H
|
|---|
| 433 |
|
|---|
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