`zpotrs:`procedureThese routines solve a system of linear equations

*A * X = B*with a symmetric positive definite matrix*A*using the Cholesky factorization computed by the xPOTRF routines. Argument*A*is the triangular factor*U*or*L*as computed by xPOTRF. Argument*NRHS*is the number of right-hand sides (i.e. number of columns in*B*). Argument UPLO indicates whether upper or lower triangle of A is stored (**Upper**or**Lower**). Optional arguments*LDA*and*LDB*are the leading dimensions of arrays*A*and*B*, respectively. The return value is the solution matrix*X*.