_zgbmatrix-calc.hpp File Reference

Go to the source code of this file.

Functions
_zgbmatrix	t (const _zgbmatrix &mat)
_zgematrix	i (const _zgbmatrix &mat)
_zgbmatrix	conj (const _zgbmatrix &mat)
_zgbmatrix	conjt (const _zgbmatrix &mat)

Function Documentation

_zgbmatrix t ( const _zgbmatrix &  mat )

inline

return its transposed zgbmatrix

Definition at line 3 of file _zgbmatrix-calc.hpp.

References _(), _zgbmatrix::destroy(), i(), zgbmatrix::kl, _zgbmatrix::kl, _zgbmatrix::ku, zgbmatrix::ku, zgbmatrix::m, _zgbmatrix::m, _zgbmatrix::n, and zgbmatrix::n.

{CPPL_VERBOSE_REPORT;
  zgbmatrix newmat(mat.n, mat.m, mat.ku, mat.kl);
  for(CPPL_INT i=0; i<newmat.m; i++){
    const CPPL_INT jmax =std::min(newmat.n,i+newmat.ku+1);
    for(CPPL_INT j=std::max(CPPL_INT(0),i-newmat.kl); j<jmax; j++){
      newmat(i,j) =mat(j,i);
    }
  }
  
  mat.destroy();
  return _(newmat);
}

_zgematrix i ( const _zgbmatrix &  mat )

inline

return its inverse matrix

Definition at line 19 of file _zgbmatrix-calc.hpp.

References _(), zgematrix::identity(), _zgbmatrix::m, zgbmatrix::m, zgbmatrix::n, _zgbmatrix::n, and zgbmatrix::zgbsv().

Referenced by conj(), conjt(), and t().

{CPPL_VERBOSE_REPORT;
#ifdef  CPPL_DEBUG
  if(mat.m!=mat.n){
    ERROR_REPORT;
    std::cerr << "This matrix is not square and has no inverse matrix." << std::endl
              << "Your input was (" << mat.m << "x" << mat.n << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  zgbmatrix mat_cp(mat);
  zgematrix mat_inv(mat_cp.m,mat_cp.n);
  mat_inv.identity();
  mat_cp.zgbsv(mat_inv);
  
  return _(mat_inv);
}

_zgbmatrix conj ( const _zgbmatrix &  mat )

inline

return its conjugate matrix

Definition at line 44 of file _zgbmatrix-calc.hpp.

References i(), _zgbmatrix::kl, _zgbmatrix::ku, _zgbmatrix::m, and _zgbmatrix::n.

Referenced by conjt().

{CPPL_VERBOSE_REPORT;
  for(CPPL_INT i=0; i<mat.m; i++){
    const CPPL_INT jmax =std::min(mat.n,i+mat.ku+1);
    for(CPPL_INT j=std::max(CPPL_INT(0),i-mat.kl); j<jmax; j++){
      mat(i,j) =std::conj(mat(i,j));
    }
  }
  
  return mat;
}

_zgbmatrix conjt ( const _zgbmatrix &  mat )

inline

return its conjugate transposed zgbmatrix

Definition at line 58 of file _zgbmatrix-calc.hpp.

References _(), conj(), _zgbmatrix::destroy(), i(), zgbmatrix::kl, _zgbmatrix::kl, _zgbmatrix::ku, zgbmatrix::ku, _zgbmatrix::m, zgbmatrix::m, _zgbmatrix::n, and zgbmatrix::n.

{CPPL_VERBOSE_REPORT;
  zgbmatrix newmat(mat.n, mat.m, mat.ku, mat.kl);
  
  for(CPPL_INT i=0; i<newmat.m; i++){
    const CPPL_INT jmax =std::min(newmat.n,i+newmat.ku+1);
    for(CPPL_INT j=std::max(CPPL_INT(0),i-newmat.kl); j<jmax; j++){
      newmat(i,j) =std::conj(mat(j,i));
    }
  }
  
  mat.destroy();
  return _(newmat);
}