Kokkos Node API and Local Linear Algebra Kernels Version of the Day
Tsqr_ApplyType.cpp
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00041 
00042 #include <Tsqr_ApplyType.hpp>
00043 #include <stdexcept>
00044 
00045 
00046 namespace TSQR {
00047   ApplyType::ApplyType (const std::string& op) :
00048     type_ (decide_apply_type (op)),
00049     lapackString_ (enumToLapackString (type_))
00050   {}
00051 
00052   ApplyType::ApplyType (const ApplyType& rhs) :
00053     type_ (rhs.type_),
00054     lapackString_ (rhs.lapackString_)
00055   {}
00056 
00057   ApplyType& ApplyType::operator= (const ApplyType& rhs) {
00058     type_ = rhs.type_;
00059     lapackString_ = rhs.lapackString_;
00060     return *this;
00061   }
00062 
00063   const ApplyType ApplyType::NoTranspose = ApplyType ("N");
00064   const ApplyType ApplyType::Transpose = ApplyType ("T");
00065   const ApplyType ApplyType::ConjugateTranspose = ApplyType ("C");
00066 
00067   std::string 
00068   ApplyType::enumToLapackString (const ApplyType::ApplyType_ theType)
00069   {
00070     if (theType == NoTranspose_)
00071       return std::string("N");
00072     else if (theType == Transpose_)
00073       return std::string("T");
00074     else if (theType == ConjugateTranspose_)
00075       return std::string("C");
00076     else
00077       throw std::logic_error("Invalid ApplyType: should never get here");
00078   }
00079 
00080   bool 
00081   ApplyType::decide_transposed (const std::string& op) const 
00082   {
00083     if (op[0] == 'N' || op[0] == 'n')
00084       return false;
00085     else
00086       {
00087   const char validTransposeLetters[] = "TtCcHh";
00088   const int numValidTransposeLetters = 6;
00089 
00090   for (int k = 0; k < numValidTransposeLetters; ++k)
00091     if (op[0] == validTransposeLetters[k])
00092       return true;
00093 
00094   throw std::invalid_argument ("Invalid \"op\" argument \"" + op + "\"");
00095       }
00096   }
00097 
00098   ApplyType::ApplyType_
00099   ApplyType::decide_apply_type (const std::string& op) const 
00100   {
00101     if (op[0] == 'T' || op[0] == 't')
00102       return Transpose_;
00103     else if (op[0] == 'N' || op[0] == 'n')
00104       return NoTranspose_;
00105     else if (op[0] == 'C' || op[0] == 'c' || op[0] == 'H' || op[0] == 'h')
00106       return ConjugateTranspose_;
00107     else
00108       throw std::invalid_argument ("Invalid \"op\" argument \"" + op + "\"");
00109   }
00110 }
00111 
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