`zsyrk:`procedure`xSYRK`performs one of the symmetric rank k operations{{C := alpha*A*A' + beta*C}} or {{C := alpha*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`symmetric matrix.

`zsyrk:`procedure`xSYRK`performs one of the symmetric rank k operations{{C := alpha*A*A' + beta*C}} or {{C := alpha*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`symmetric matrix.