program main

c*********************************************************************72
c
cc test_interp_test() tests test_interp().
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    06 February 2012
c
c  Author:
c
c    John Burkardt
c
      implicit none

      call timestamp (  )
      write ( *, '(a)' ) ' '
      write ( *, '(a)' ) 'test_interp_test():'
      write ( *, '(a)' ) '  FORTRAN77 version'
      write ( *, '(a)' ) '  Test test_interp().'
      write ( *, '(a)' ) '  This test also requires the R8LIB library.'

      call test01 ( )
      call test02 ( )
c
c  Terminate.
c
      write ( *, '(a)' ) ' '
      write ( *, '(a)' ) 'test_interp_test():'
      write ( *, '(a)' ) '  Normal end of execution.'
      write ( *, '(a)' ) ' '
      call timestamp ( )

      stop
      end
      subroutine test01 ( )

c*********************************************************************72
c
cc TEST01 shows how P00_STORY can be called.
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    06 February 2012
c
c  Author:
c
c    John Burkardt
c
      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 ( )

c*********************************************************************72
c
cc TEST02 prints the data for each problem.
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    06 February 2012
c
c  Author:
c
c    John Burkardt
c
      implicit none

      integer data_max
      parameter ( data_max = 100 )

      integer data_num
      integer dim_num
      double precision p(2,data_max)
      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

        call p00_data ( prob, dim_num, data_num, p )

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

      end do

      return
      end
      subroutine r8mat_copy ( m, n, a1, a2 )

c*********************************************************************72
c
cc r8mat_copy() copies an R8MAT.
c
c  Discussion:
c
c    An R8MAT is an MxN array of R8's, stored by (I,J) -> [I+J*M].
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    26 July 2008
c
c  Author:
c
c    John Burkardt
c
c  Parameters:
c
c    Input, integer M, N, the order of the matrix.
c
c    Input, double precision A1(M,N), the matrix to be copied.
c
c    Output, double precision A2(M,N), a copy of the matrix.
c
      implicit none

      integer m
      integer n

      double precision a1(m,n)
      double precision a2(m,n)
      integer i
      integer j

      do j = 1, n
        do i = 1, m
          a2(i,j) = a1(i,j)
        end do
      end do

      return
      end
      subroutine r8mat_transpose_print ( m, n, a, title )

c*********************************************************************72
c
cc r8mat_transpose_print() prints an R8MAT, transposed.
c
c  Discussion:
c
c    An R8MAT is an array of R8's.
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    28 April 2008
c
c  Author:
c
c    John Burkardt
c
c  Parameters:
c
c    Input, integer M, N, the number of rows and columns.
c
c    Input, double precision A(M,N), an M by N matrix to be printed.
c
c    Input, character*(*) TITLE, a title.
c
      implicit none

      integer m
      integer n

      double precision a(m,n)
      character*(*) title

      call r8mat_transpose_print_some ( m, n, a, 1, 1, m, n, title )

      return
      end
      subroutine r8mat_transpose_print_some ( m, n, a, ilo, jlo, ihi,
     &  jhi, title )

c*********************************************************************72
c
cc r8mat_transpose_print_some() prints some of an R8MAT transposed.
c
c  Discussion:
c
c    An R8MAT is an array of R8's.
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    28 April 2008
c
c  Author:
c
c    John Burkardt
c
c  Parameters:
c
c    Input, integer M, N, the number of rows and columns.
c
c    Input, double precision A(M,N), an M by N matrix to be printed.
c
c    Input, integer ILO, JLO, the first row and column to print.
c
c    Input, integer IHI, JHI, the last row and column to print.
c
c    Input, character * ( * ) TITLE, a title.
c
      implicit none

      integer incx
      parameter ( incx = 5 )
      integer m
      integer n

      double precision a(m,n)
      character * ( 14 ) ctemp(incx)
      integer i
      integer i2
      integer i2hi
      integer i2lo
      integer ihi
      integer ilo
      integer inc
      integer j
      integer j2hi
      integer j2lo
      integer jhi
      integer jlo
      character * ( * ) title

      write ( *, '(a)' ) ' '
      write ( *, '(a)' ) trim ( title )

      if ( m .le. 0 .or. n .le. 0 ) then
        write ( *, '(a)' ) ' '
        write ( *, '(a)' ) '  (None)'
        return
      end if

      do i2lo = max ( ilo, 1 ), min ( ihi, m ), incx

        i2hi = i2lo + incx - 1
        i2hi = min ( i2hi, m )
        i2hi = min ( i2hi, ihi )

        inc = i2hi + 1 - i2lo

        write ( *, '(a)' ) ' '

        do i = i2lo, i2hi
          i2 = i + 1 - i2lo
          write ( ctemp(i2), '(i8,6x)') i
        end do

        write ( *, '(''       Row'',5a14)' ) ctemp(1:inc)
        write ( *, '(a)' ) '       Col'

        j2lo = max ( jlo, 1 )
        j2hi = min ( jhi, n )

        do j = j2lo, j2hi

          do i2 = 1, inc
            i = i2lo - 1 + i2
            write ( ctemp(i2), '(g14.6)' ) a(i,j)
          end do

          write ( *, '(2x,i8,a,5a14)' ) j, ':', ( ctemp(i), i = 1, inc )

        end do

      end do

      return
      end
      subroutine timestamp ( )

c*********************************************************************72
c
cc timestamp() prints the YMDHMS date as a timestamp.
c
c  Licensing:
c
c    This code is distributed under the MIT license.
c
c  Modified:
c
c    12 June 2014
c
c  Author:
c
c    John Burkardt
c
      implicit none

      character * ( 8 ) ampm
      integer d
      character * ( 8 ) date
      integer h
      integer m
      integer mm
      character * ( 9 ) month(12)
      integer n
      integer s
      character * ( 10 ) time
      integer y

      save month

      data month /
     &  'January  ', 'February ', 'March    ', 'April    ', 
     &  'May      ', 'June     ', 'July     ', 'August   ', 
     &  'September', 'October  ', 'November ', 'December ' /

      call date_and_time ( date, time )

      read ( date, '(i4,i2,i2)' ) y, m, d
      read ( time, '(i2,i2,i2,1x,i3)' ) h, n, s, mm

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

      write ( *, 
     &  '(i2,1x,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