Module STRMM in IMSLMPerforms one of the matrix-matrix operations: B = alpha*op( A )*B, or B = alpha*B*op( A ), where alpha is a scalar, B is an m by n matrix, A is a unit, or non-unit, upper or lower triangular matrix and op( A ) is one of op( A ) = A or op( A ) = trans(A) where trans represents the transpose of the matrix.