diff options
| author |  Chen-Pang He <jdh8@ms63.hinet.net> | 2012-09-10 06:29:02 +0800 |
|---|---|---|
| committer | Chen-Pang He <jdh8@ms63.hinet.net> | 2012-09-10 06:29:02 +0800 |
| commit | 65caa40a3d792dbbd28b3f47de2a87efea58bb24 (patch) | |
| tree | 19a81133ad52bb3276a88adf0359089c12bb4972 /blas/level2_impl.h | |
| parent | 3642ca4d465f347188e155aab4464b6e814855cb (diff) | |
Implement packed triangular solver.
Diffstat (limited to 'blas/level2_impl.h')
| -rw-r--r-- | blas/level2_impl.h | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/blas/level2_impl.h b/blas/level2_impl.h index 997ad016f..bd41f7e60 100644 --- a/blas/level2_impl.h +++ b/blas/level2_impl.h @@ -470,8 +470,55 @@ int EIGEN_BLAS_FUNC(tpmv)(char *uplo, char *opa, char *diag, int *n, RealScalar * No test for singularity or near-singularity is included in this * routine. Such tests must be performed before calling this routine. */ -// int EIGEN_BLAS_FUNC(tpsv)(char *uplo, char *trans, char *diag, int *n, RealScalar *ap, RealScalar *x, int *incx) -// { -// return 1; -// } +int EIGEN_BLAS_FUNC(tpsv)(char *uplo, char *opa, char *diag, int *n, RealScalar *pap, RealScalar *px, int *incx) +{ + typedef void (*functype)(int, const Scalar*, Scalar*); + static functype func[16]; + + static bool init = false; + if(!init) + { + for(int k=0; k<16; ++k) + func[k] = 0; + + func[NOTR | (UP << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|0, false,ColMajor>::run); + func[TR | (UP << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|0, false,RowMajor>::run); + func[ADJ | (UP << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|0, Conj, RowMajor>::run); + + func[NOTR | (LO << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|0, false,ColMajor>::run); + func[TR | (LO << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|0, false,RowMajor>::run); + func[ADJ | (LO << 2) | (NUNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|0, Conj, RowMajor>::run); + + func[NOTR | (UP << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|UnitDiag,false,ColMajor>::run); + func[TR | (UP << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|UnitDiag,false,RowMajor>::run); + func[ADJ | (UP << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|UnitDiag,Conj, RowMajor>::run); + + func[NOTR | (LO << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Lower|UnitDiag,false,ColMajor>::run); + func[TR | (LO << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|UnitDiag,false,RowMajor>::run); + func[ADJ | (LO << 2) | (UNIT << 3)] = (internal::packed_triangular_solve_vector<Scalar,Scalar,int,OnTheLeft, Upper|UnitDiag,Conj, RowMajor>::run); + + init = true; + } + + Scalar* ap = reinterpret_cast<Scalar*>(pap); + Scalar* x = reinterpret_cast<Scalar*>(px); + + int info = 0; + if(UPLO(*uplo)==INVALID) info = 1; + else if(OP(*opa)==INVALID) info = 2; + else if(DIAG(*diag)==INVALID) info = 3; + else if(*n<0) info = 4; + else if(*incx==0) info = 7; + if(info) + return xerbla_(SCALAR_SUFFIX_UP"TPSV ",&info,6); + + Scalar* actual_x = get_compact_vector(x,*n,*incx); + + int code = OP(*opa) | (UPLO(*uplo) << 2) | (DIAG(*diag) << 3); + func[code](*n, ap, actual_x); + + if(actual_x!=x) delete[] copy_back(actual_x,x,*n,*incx); + + return 1; +} |