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/*
* Copyright (c) 2012, Klaus Pototzky * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1) Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3) Neither the name of the FLENS development group nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef FLENS_IO_BANDSTORAGE_LOAD_TCC #define FLENS_IO_BANDSTORAGE_LOAD_TCC 1 #include <functional> #include <locale> #include <fstream> #include <cxxblas/typedefs.h> #include <flens/io/bandstorage/load.h> namespace flens { template <typename FS> bool load(std::string filename, GbMatrix<FS> &A) { typedef typename FS::IndexType IndexType; typedef typename FS::ElementType ElementType; std::ifstream ifs(filename.c_str(), std::ios::binary); if (ifs.is_open()==false) { return false; } IndexType numRows, numCols; IndexType numSubDiags, numSuperDiags; IndexType firstRow, firstCol; ifs.read(reinterpret_cast<char*>(&numRows), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numCols), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numSubDiags), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numSuperDiags), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&firstRow), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&firstCol), sizeof(IndexType)); A.resize(numRows, numCols, numSubDiags, numSuperDiags, firstRow, firstCol); for (IndexType i=-A.numSubDiags(); i<=A.numSuperDiags(); ++i) { auto Diag = A.viewDiag(i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType)); } } ifs.close(); return true; } template <typename FS> bool load(std::string filename, HbMatrix<FS> &A) { typedef typename FS::IndexType IndexType; typedef typename FS::ElementType ElementType; std::ifstream ifs( filename.c_str(), std::ios::binary ); if (ifs.is_open()==false) { return false; } IndexType dim = A.dim(); IndexType numOffDiags = A.numOffDiags(); IndexType firstIndex = A.firstIndex(); ifs.read(reinterpret_cast<char*>(&dim), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numOffDiags), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&firstIndex), sizeof(IndexType)); A.resize(dim, numOffDiags, firstIndex); for (IndexType i=-A.numOffDiags(); i<=0; ++i) { if (A.upLo()==cxxblas::Lower) { auto Diag = A.viewDiag(i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType)); } } else { auto Diag = A.viewDiag(-i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { ElementType alpha; ifs.read(reinterpret_cast<char*>(&alpha), sizeof(ElementType)); Diag(j) = cxxblas::conjugate(alpha); } } } ifs.close(); return true; } template <typename FS> bool load(std::string filename, SbMatrix<FS> &A) { typedef typename FS::IndexType IndexType; typedef typename FS::ElementType ElementType; std::ifstream ifs( filename.c_str(), std::ios::binary ); if (ifs.is_open()==false) { return false; } IndexType dim = A.dim(); IndexType numOffDiags = A.numOffDiags(); IndexType firstIndex = A.firstIndex(); ifs.read(reinterpret_cast<char*>(&dim), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numOffDiags), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&firstIndex), sizeof(IndexType)); A.resize(dim, numOffDiags, firstIndex); for (IndexType i=-A.numOffDiags(); i<=0; ++i) { if (A.upLo()==cxxblas::Lower) { auto Diag = A.viewDiag(i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType) ); } } else { auto Diag = A.viewDiag(-i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType) ); } } } ifs.close(); return true; } template <typename FS> bool load(std::string filename, TbMatrix<FS> &A) { typedef typename FS::IndexType IndexType; typedef typename FS::ElementType ElementType; std::ifstream ifs( filename.c_str(), std::ios::binary ); if (ifs.is_open()==false) { return false; } IndexType dim; IndexType numOffDiags; IndexType firstIndex; StorageUpLo upLo; Diag diag; ifs.read(reinterpret_cast<char*>(&dim), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&numOffDiags), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&firstIndex), sizeof(IndexType)); ifs.read(reinterpret_cast<char*>(&upLo), sizeof(StorageUpLo)); ifs.read(reinterpret_cast<char*>(&diag), sizeof(Diag)); ASSERT(upLo==A.upLo()); ASSERT((diag==A.diag()) || (A.diag()==cxxblas::NonUnit)); A.resize(dim, numOffDiags, firstIndex); if (upLo == cxxblas::Lower) { for (IndexType i=-A.numOffDiags(); i <= 0; ++i){ auto Diag = A.viewDiag(i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { if (diag==cxxblas::NonUnit || i != 0) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType) ); } else if (A.diag()==cxxblas::NonUnit) { Diag(i) = ElementType(i); } } } } else { for (IndexType i=0; i<=A.numOffDiags(); ++i){ auto Diag = A.viewDiag(i); for (IndexType j=Diag.firstIndex(); j<=Diag.lastIndex(); ++j) { if (diag==cxxblas::NonUnit || i != 0) { ifs.read(reinterpret_cast<char*>(&(Diag(j))), sizeof(ElementType) ); } else if (A.diag()==cxxblas::NonUnit) { Diag(i) = ElementType(i); } } } } ifs.close(); return true; } //-- forwarding --------------------------------------------------------------- template <typename MA> typename RestrictTo<IsGbMatrix<MA>::value || IsHbMatrix<MA>::value || IsSbMatrix<MA>::value || IsTbMatrix<MA>::value, bool>::Type load(std::string filename, MA &&A) { return load(filename, A); } } // namespace flens #endif // FLENS_IO_BANDSTORAGE_LOAD_TCC |