program main

!*****************************************************************************80
!
!! test_interp_test() tests test_interp().
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    20 May 2007
!
!  Author:
!
!    John Burkardt
!
  implicit none

  call timestamp (  )
  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'test_interp_test():'
  write ( *, '(a)' ) '  FORTRAN90 version'
  write ( *, '(a)' ) '  Test TEST_INTERP().'
  write ( *, '(a)' ) '  This test also requires the R8LIB library.'

  call test01 ( )
  call test02 ( )
!
!  Terminate.
!
  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'TEST_INTERP_TEST'
  write ( *, '(a)' ) '  Normal end of execution.'
  write ( *, '(a)' ) ' '
  call timestamp ( )

  stop 0
end
subroutine test01 ( )

!*****************************************************************************80
!
!! TEST01 shows how P00_STORY can be called.
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    20 May 2007
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer prob
  integer prob_num

  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'TEST01'
  write ( *, '(a)' ) '  P00_STORY prints the problem "story".'

  call p00_prob_num ( prob_num )

  do prob = 1, prob_num

    write ( *, '(a)' ) ' '
    write ( *, '(a,i8)' ) '  Problem ', prob

    call p00_story ( prob )

  end do

  return
end
subroutine test02 ( )

!*****************************************************************************80
!
!! TEST02 prints the data for each problem.
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    26 May 2011
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  integer data_num
  integer dim_num
  real ( kind = rk ), allocatable :: p(:,:)
  integer prob
  integer prob_num

  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'TEST02'
  write ( *, '(a)' ) '  P00_DATA_NUM returns N, the number of data points.'
  write ( *, '(a)' ) '  P00_DIM_NUM returns M, the dimension of data.'
  write ( *, '(a)' ) '  P00_DATA returns the actual (MxN) data.'

  call p00_prob_num ( prob_num )

  do prob = 1, prob_num

    write ( *, '(a)' ) ' '
    write ( *, '(a,i8)' ) '  Problem  ', prob

    call p00_data_num ( prob, data_num )
    write ( *, '(a,i8)' ) '  DATA_NUM ', data_num
    call p00_dim_num ( prob, dim_num )
    write ( *, '(a,i8)' ) '  DIM_NUM  ', dim_num
    allocate ( p(1:dim_num,1:data_num) )

    call p00_data ( prob, dim_num, data_num, p )

    call r8mat_transpose_print ( dim_num, data_num, p, '  Data array:' )

    deallocate ( p )

  end do

  return
end
subroutine timestamp ( )

!*****************************************************************************80
!
!! timestamp() prints the current YMDHMS date as a time stamp.
!
!  Example:
!
!    31 May 2001   9:45:54.872 AM
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    15 August 2021
!
!  Author:
!
!    John Burkardt
!
  implicit none

  character ( len = 8 ) ampm
  integer d
  integer h
  integer m
  integer mm
  character ( len = 9 ), parameter, dimension(12) :: month = (/ &
    'January  ', 'February ', 'March    ', 'April    ', &
    'May      ', 'June     ', 'July     ', 'August   ', &
    'September', 'October  ', 'November ', 'December ' /)
  integer n
  integer s
  integer values(8)
  integer y

  call date_and_time ( values = values )

  y = values(1)
  m = values(2)
  d = values(3)
  h = values(5)
  n = values(6)
  s = values(7)
  mm = values(8)

  if ( h < 12 ) then
    ampm = 'AM'
  else if ( h == 12 ) then
    if ( n == 0 .and. s == 0 ) then
      ampm = 'Noon'
    else
      ampm = 'PM'
    end if
  else
    h = h - 12
    if ( h < 12 ) then
      ampm = 'PM'
    else if ( h == 12 ) then
      if ( n == 0 .and. s == 0 ) then
        ampm = 'Midnight'
      else
        ampm = 'AM'
      end if
    end if
  end if

  write ( *, '(i2.2,1x,a,1x,i4,2x,i2,a1,i2.2,a1,i2.2,a1,i3.3,1x,a)' ) &
    d, trim ( month(m) ), y, h, ':', n, ':', s, '.', mm, trim ( ampm )

  return
end