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! { dg-do run { xfail spu-*-* ia64-*-linux* } }
! { dg-options "-fno-range-check -ffree-line-length-none -O0" }
! { dg-add-options ieee }
! { dg-skip-if "PR libfortran/59313" { sparc*-*-solaris2.9* hppa*-*-hpux* } }
!
! Check that simplification functions and runtime library agree on ERF,
! ERFC and ERFC_SCALED, for quadruple-precision.
!
! XFAILed for SPU targets because our library implementation of
! the double-precision erf/erfc functions is not accurate enough.
!
! XFAILed for IA64 Linux because of a glibc bug:
! http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59227
program test
use, intrinsic :: iso_fortran_env
implicit none
! QP will be the largest supported real kind, possibly real(kind=16)
integer, parameter :: qp = real_kinds(ubound(real_kinds,dim=1))
real(kind=qp) :: x
#define CHECK(a) \
x = a ; \
call check(erf(real(a,kind=qp)), erf(x)) ; \
call check(erfc(real(a,kind=qp)), erfc(x)) ; \
call check(erfc_scaled(real(a,kind=qp)), erfc_scaled(x))
CHECK(0.0)
CHECK(0.9)
CHECK(1.9)
CHECK(10.)
CHECK(11.)
CHECK(12.)
CHECK(13.)
CHECK(14.)
CHECK(49.)
CHECK(190.)
CHECK(-0.0)
CHECK(-0.9)
CHECK(-1.9)
CHECK(-19.)
CHECK(-190.)
contains
subroutine check (a, b)
real(kind=qp), intent(in) :: a, b
print *, abs(a-b) / spacing(a)
if (abs(a - b) > 10 * spacing(a)) call abort
end subroutine
end program test
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