From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gfortran.dg/gamma_5.f90 | 42 +++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 gcc/testsuite/gfortran.dg/gamma_5.f90 (limited to 'gcc/testsuite/gfortran.dg/gamma_5.f90') diff --git a/gcc/testsuite/gfortran.dg/gamma_5.f90 b/gcc/testsuite/gfortran.dg/gamma_5.f90 new file mode 100644 index 000000000..467c57962 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/gamma_5.f90 @@ -0,0 +1,42 @@ +! { dg-do run } +! PR 33683 - we used to pick up the wrong gamma function +! from the library on some systems. +program main + implicit none + integer, parameter :: n_max = 20 + double precision, dimension(0:n_max) :: c + double precision :: pi + integer :: n + double precision :: td, xd + real :: ts,xs + + pi = 4 * atan(1.d0) + c(0) = 1. + do n=1, n_max + c(n) = (2*n-1)*c(n-1)*0.5d0 + end do + + do n=1, n_max + xs = n + 0.5 + xd = n + 0.5d0 + td = c(n)*sqrt(pi) + ts = c(n)*sqrt(pi) + if (abs(gamma(xs)-ts)/ts > 9e-6) call abort + if (abs(gamma(xd)-td)/td > 5e-14) call abort + end do + call tst_s(2.3, gamma(2.3)) + call tst_s(3.7, gamma(3.7)) + call tst_s(5.5, gamma(5.5)) + call tst_d(4.2d0, gamma(4.2d0)) + call tst_d(8.1d0, gamma(8.1d0)) +contains + subroutine tst_s(a, b) + real :: a, b + if (abs(gamma(a) - b)/b > 1e-6) call abort + end subroutine tst_s + + subroutine tst_d(a, b) + double precision :: a,b + if (abs(gamma(a) - b)/b > 5e-14) call abort + end subroutine tst_d +end program main -- cgit v1.2.3