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! { dg-do run }

! { dg-options "-fno-range-check -ffree-line-length-none " }

! { dg-add-options ieee }

!

! Check that simplification functions and runtime library agree on ERF,

! ERFC and ERFC_SCALED.

program test

  implicit none

  interface check

    procedure check_r4

    procedure check_r8

  end interface check

  real(kind=4) :: x4

  real(kind=8) :: x8

#define CHECK(a) \

  x8 = a ; x4 = a ; \

  call check(erf(real(a,kind=8)), erf(x8)) ; \

  call check(erf(real(a,kind=4)), erf(x4)) ; \

  call check(erfc(real(a,kind=8)), erfc(x8)) ; \

  call check(erfc(real(a,kind=4)), erfc(x4)) ; \

  call check(erfc_scaled(real(a,kind=8)), erfc_scaled(x8)) ; \

  call check(erfc_scaled(real(a,kind=4)), erfc_scaled(x4)) ;

  CHECK(0.0)

  CHECK(0.9)

  CHECK(1.9)

  CHECK(19.)

  CHECK(190.)

  CHECK(-0.0)

  CHECK(-0.9)

  CHECK(-1.9)

  CHECK(-19.)

  CHECK(-190.)

contains

  subroutine check_r4 (a, b)

    real(kind=4), intent(in) :: a, b

    if (abs(a - b) > 10 * spacing(a)) call abort

  end subroutine

  subroutine check_r8 (a, b)

    real(kind=8), intent(in) :: a, b

    if (abs(a - b) > 10 * spacing(a)) call abort

  end subroutine

end program test