Anasazi Version of the Day
Tsqr_ApplyType.hpp
00001 // @HEADER
00002 // ***********************************************************************
00003 //
00004 //                 Anasazi: Block Eigensolvers Package
00005 //                 Copyright (2010) Sandia Corporation
00006 //
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 //
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
00025 //
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef __TSQR_TsqrApplyType_hpp
00030 #define __TSQR_TsqrApplyType_hpp
00031 
00032 #include <string>
00033 
00036 
00037 namespace TSQR {
00038 
00054   class ApplyType {
00055   public:
00060     ApplyType (const std::string& op);
00061 
00072     bool transposed () const { return type_ != NoTranspose_; }
00073 
00076     ApplyType (const ApplyType& rhs);
00077 
00080     ApplyType& operator= (const ApplyType& rhs);
00081 
00082     bool operator== (const ApplyType& rhs) const {
00083       return type_ == rhs.type_;
00084     }
00085 
00086     bool operator!= (const ApplyType& rhs) const {
00087       return !(type_ == rhs.type_);
00088     }
00089 
00092     static const ApplyType NoTranspose;
00093 
00096     static const ApplyType Transpose;
00097 
00100     static const ApplyType ConjugateTranspose;
00101 
00110     const std::string& toString () const { return lapackString_; }
00111 
00112   private:
00116     enum ApplyType_ { NoTranspose_, Transpose_, ConjugateTranspose_ };
00119     ApplyType_ type_;
00120 
00123     static std::string 
00124     enumToLapackString (const ApplyType::ApplyType_ theType);
00125 
00128     bool 
00129     decide_transposed (const std::string& op) const;
00130 
00135     ApplyType_
00136     decide_apply_type (const std::string& op) const;
00137 
00145     std::string lapackString_;
00146   };
00147 
00148 } // namespace TSQR
00149 
00150 #endif // __TSQR_TsqrApplyType_hpp
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