ER
          The leading dimension of the array F1.
          If TYPEG = 'D'  or  TYPEG = 'C',   LDF1 &gt;= MAX(1,N);
          if TYPEG = 'R',                    LDF1 &gt;= MAX(1,K).

  F2      (input/output)  DOUBLE PRECISION array,
          if TYPEG = 'D'  or  TYPEG = 'C',  dimension (LDF2, P-K);
          if TYPEG = 'R',                   dimension (LDF2, N).
          On entry, if TYPEG = 'D'  or  TYPEG = 'C', the leading
          N-by-(P-K) part of this array must contain the second part
          o