 (LDB,N)
          if LTRANS = .FALSE., and dimension (LDB,M), if
          LTRANS = .TRUE..
          On entry, if LTRANS = .FALSE., the leading M-by-N part of
          this array must contain the coefficient matrix B of the
          equation.
          On entry, if LTRANS = .TRUE., the leading N-by-M part of
          this array must contain the coefficient matrix B of the
          equation.
          On exit, if LTRANS = .FALSE., the leading
          MIN(M,N)-by-MIN(M,N) upper triangular part of this