Identity

The \(n \times n\) identity matrix is simply defined by setting entry \((i,j)\) to one if \(i = j\), and zero otherwise. For various reasons, we generalize this definition to nonsquare, \(m \times n\), matrices.

C++ API

void Identity(Matrix<T> &A, Int m, Int n)

void Identity(AbstractDistMatrix<T> &A, Int m, Int n)

Set the matrix A equal to the \(m \times n\) identity(-like) matrix.

void MakeIdentity(Matrix<T> &A)

void MakeIdentity(AbstractDistMatrix<T> &A)

Set the matrix A to be identity-like.

C API

ElError ElIdentity_i(ElMatrix_i A, ElInt m, ElInt n)

ElError ElIdentity_s(ElMatrix_s A, ElInt m, ElInt n)

ElError ElIdentity_d(ElMatrix_d A, ElInt m, ElInt n)

ElError ElIdentity_c(ElMatrix_c A, ElInt m, ElInt n)

ElError ElIdentity_z(ElMatrix_z A, ElInt m, ElInt n)

ElError ElIdentityDist_i(ElDistMatrix_i A, ElInt m, ElInt n)

ElError ElIdentityDist_s(ElDistMatrix_s A, ElInt m, ElInt n)

ElError ElIdentityDist_d(ElDistMatrix_d A, ElInt m, ElInt n)

ElError ElIdentityDist_c(ElDistMatrix_c A, ElInt m, ElInt n)

ElError ElIdentityDist_z(ElDistMatrix_z A, ElInt m, ElInt n)

Python API

Identity(A, m, n)