encode_ascii_dataarray1_rank3_R4P Function

  function encode_ascii_dataarray1_rank3_R4P(x) result(code)
  !< Encode (Base64) a dataarray with 1 components of rank 3 (R4P).
  real(R4P),       intent(in)   :: x(1:,1:,1:) !< Data variable
  character(len=:), allocatable :: code        !< Encoded base64 dataarray.
  integer(I4P)                  :: n1          !< Counter.
  integer(I4P)                  :: n2          !< Counter.
  integer(I4P)                  :: n3          !< Counter.
  integer(I4P)                  :: l           !< Length
  integer(I4P)                  :: sp          !< String pointer
  integer(I4P)                  :: size_n1     !< Dimension 1 size
  integer(I4P)                  :: size_n2     !< Dimension 2 size
  integer(I4P)                  :: size_n3     !< Dimension 3 size
  
  size_n1 = size(x, dim=1)
  size_n2 = size(x, dim=2)
  size_n3 = size(x, dim=3)
  
  l = DR4P + 1
  sp = 0
  code = repeat(' ',l*size_n1*size_n2*size_n3)
  do n3=1, size(x, dim=3)
    do n2=1, size(x, dim=2)
      do n1=1, size(x, dim=1)-1
        code(sp+1:sp+l) = str(n=x(n1, n2, n3))//' '
        sp = sp + l
      enddo
      code(sp+1:sp+l) = ' '//str(n=x(size(x, dim=1), n2, n3))
      sp = sp + l
    enddo
  enddo
  endfunction encode_ascii_dataarray1_rank3_R4P