Syr2

Symmetric rank-two update: implicitly performs \(A := \alpha ( x y^T + y x^T ) + A\), where only the triangle of \(A\) specified by uplo is updated.

C++ API

void Syr2(UpperOrLower uplo, T alpha, const Matrix<T> &x, const Matrix<T> &y, Matrix<T> &A, bool conjugate = false)

void Syr2(UpperOrLower uplo, T alpha, const AbstractDistMatrix<T> &x, const AbstractDistMatrix<T> &y, AbstractDistMatrix<T> &A, bool conjugate = false)

C API

ElError ElSyr2_i(ElUpperOrLower uplo, ElInt alpha, ElConstMatrix_i x, ElConstMatrix_i y, ElMatrix_i A)

ElError ElSyr2_s(ElUpperOrLower uplo, float alpha, ElConstMatrix_s x, ElConstMatrix_s y, ElMatrix_s A)

ElError ElSyr2_d(ElUpperOrLower uplo, double alpha, ElConstMatrix_d x, ElConstMatrix_d y, ElMatrix_d A)

ElError ElSyr2_c(ElUpperOrLower uplo, complex_float alpha, ElConstMatrix_c x, ElConstMatrix_c y, ElMatrix_c A)

ElError ElSyr2_z(ElUpperOrLower uplo, complex_double alpha, ElConstMatrix_z x, ElConstMatrix_z y, ElMatrix_z A)

ElError ElSyr2Dist_i(ElUpperOrLower uplo, ElInt alpha, ElConstDistMatrix_i x, ElConstDistMatrix_i y, ElDistMatrix_i A)

ElError ElSyr2Dist_s(ElUpperOrLower uplo, float alpha, ElConstDistMatrix_s x, ElConstDistMatrix_s y, ElDistMatrix_s A)

ElError ElSyr2Dist_d(ElUpperOrLower uplo, double alpha, ElConstDistMatrix_d x, ElConstDistMatrix_d y, ElDistMatrix_d A)

ElError ElSyr2Dist_c(ElUpperOrLower uplo, complex_float alpha, ElConstDistMatrix_c x, ElConstDistMatrix_c y, ElDistMatrix_c A)

ElError ElSyr2Dist_z(ElUpperOrLower uplo, complex_double alpha, ElConstDistMatrix_z x, ElConstDistMatrix_z y, ElDistMatrix_z A)