`zherk:`procedure`xHERK`performs one of the hermitian rank k operations`C := alpha*A*conjg(A') + beta*C`or`C := alpha*conjg(A')*A + beta*C`.`ALPHA`and`BETA`are scalars,`A`is an`N x K`or`K x N`matrix, and`C`is an`N x N`hermitian matrix.

`zherk:`procedure`xHERK`performs one of the hermitian rank k operations`C := alpha*A*conjg(A') + beta*C`or`C := alpha*conjg(A')*A + beta*C`.`ALPHA`and`BETA`are scalars,`A`is an`N x K`or`K x N`matrix, and`C`is an`N x N`hermitian matrix.