Subversion Repositories openrisc_2011-10-31

! { dg-do run }

! { dg-additional-sources value_4.c }

! { dg-options "-ff2c -w -O0" }

!

! Tests the functionality of the patch for PR29642, which requested the

! implementation of the F2003 VALUE attribute for gfortran, by calling

! external C functions by value and by reference.  This is effectively

! identical to c_by_val_1.f, which does the same for %VAL.

!

! Contributed by Paul Thomas  

!

module global

  interface delta

    module procedure deltai, deltar, deltac

  end interface delta

  real(4) :: epsi = epsilon (1.0_4)

contains

  function deltai (a, b) result (c)

    integer(4) :: a, b

    logical :: c

    c = (a /= b)

  end function deltai

  function deltar (a, b) result (c)

    real(4) :: a, b

    logical :: c

    c = (abs (a-b) > epsi)

  end function deltar

  function deltac (a, b) result (c)

    complex(4) :: a, b

    logical :: c

    c = ((abs (real (a-b)) > epsi).or.(abs (aimag (a-b)) > epsi))

  end function deltac

end module global

program value_4

  use global

  interface

    function f_to_f (x, y)

      real(4), pointer :: f_to_f

      real(4) :: x, y

      value :: x

    end function f_to_f

  end interface

  interface

    function i_to_i (x, y)

      integer(4), pointer :: i_to_i

      integer(4) :: x, y

      value :: x

    end function i_to_i

  end interface

  interface

    complex(4) function c_to_c (x, y)

      complex(4) :: x, y

      value :: x

    end function c_to_c

  end interface

  real(4)       a, b, c

  integer(4)    i, j, k

  complex(4)    u, v, w

  a = 42.0

  b = 0.0

  c = a

  b = f_to_f (a, c)

  if (delta ((2.0 * a), b)) call abort ()

  i = 99

  j = 0

  k = i

  j = i_to_i (i, k)

  if (delta ((3_4 * i), j)) call abort ()

  u = (-1.0, 2.0)

  v = (1.0, -2.0)

  w = u

  v = c_to_c (u, w)

  if (delta ((4.0 * u), v)) call abort ()

end program value_4

! { dg-final { cleanup-modules "global" } }