diff options
Diffstat (limited to 'blas')
-rw-r--r-- | blas/level2_impl.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/blas/level2_impl.h b/blas/level2_impl.h index 7eaf83835..ad0216b1f 100644 --- a/blas/level2_impl.h +++ b/blas/level2_impl.h @@ -405,8 +405,34 @@ int EIGEN_BLAS_FUNC(tpsv)(char *uplo, char *trans, char *diag, int *n, RealScala * where alpha is a scalar, x is an m element vector, y is an n element * vector and A is an m by n matrix. */ -int EIGEN_BLAS_FUNC(ger)(int *m, int *n, Scalar *alpha, Scalar *x, int *incx, Scalar *y, int *incy, Scalar *a, int *lda) +int EIGEN_BLAS_FUNC(ger)(int *m, int *n, Scalar *palpha, Scalar *px, int *incx, Scalar *py, int *incy, Scalar *pa, int *lda) { + Scalar* x = reinterpret_cast<Scalar*>(px); + Scalar* y = reinterpret_cast<Scalar*>(py); + Scalar* a = reinterpret_cast<Scalar*>(pa); + Scalar alpha = *reinterpret_cast<Scalar*>(palpha); + + int info = 0; + if(*m<0) info = 1; + else if(*n<0) info = 2; + else if(*incx==0) info = 5; + else if(*incy==0) info = 7; + else if(*lda<std::max(1,*m)) info = 9; + if(info) + return xerbla_(SCALAR_SUFFIX_UP"GER ",&info,6); + + if(alpha==Scalar(0)) + return 1; + + Scalar* x_cpy = get_compact_vector(x,*m,*incx); + Scalar* y_cpy = get_compact_vector(y,*n,*incy); + + // TODO perform direct calls to underlying implementation + matrix(a,*m,*n,*lda) += alpha * vector(x_cpy,*m) * vector(y_cpy,*n).adjoint(); + + if(x_cpy!=x) delete[] x_cpy; + if(y_cpy!=y) delete[] y_cpy; + return 1; } |