From 9945c25058ccd4c17910bf410d4377df2e9e8eed Mon Sep 17 00:00:00 2001
From: schnetter <schnetter@b716e942-a2de-43ad-8f52-f3dfe468e4e7>
Date: Tue, 26 Apr 2005 19:29:40 +0000
Subject: Disable checking for symmetries in the Ricci tensor derivatives,
 because the checking cannot handle the case when the derivative is near zero.

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinUtils/TGRtensor/trunk@25 b716e942-a2de-43ad-8f52-f3dfe468e4e7
---
 src/ricci.F90 | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/ricci.F90 b/src/ricci.F90
index f14eb49..83b144a 100644
--- a/src/ricci.F90
+++ b/src/ricci.F90
@@ -113,7 +113,7 @@ contains
   subroutine calc_ricciderivs (gamma, dgamma, ddgamma, dri)
     CCTK_REAL, intent(in)  :: gamma(3,3,3), dgamma(3,3,3,3), ddgamma(3,3,3,3,3)
     CCTK_REAL, intent(out) :: dri(3,3,3)
-    CCTK_REAL :: sum, cnt
+    CCTK_REAL :: nrm, cnt
     integer :: i,j,k,l,m
     ! R_ij =   Gamma^k_ij,k - Gamma^k_ik,j
     !        + Gamma^k_lk Gamma^l_ij - Gamma^k_lj Gamma^l_ki
@@ -134,18 +134,27 @@ contains
           end do
        end do
     end do
+#if 0
+/* Does not work when dri=0 */
     ! check symmetries
-    sum = 0
+    nrm = 0
     cnt = 0
     do i=1,3
        do j=1,3
           do k=1,3
-             sum = sum + (dri(i,j,k) - dri(j,i,k))**2
+             nrm = nrm + (dri(i,j,k) - dri(j,i,k))**2
              cnt = cnt + dri(i,j,k)**2
           end do
        end do
     end do
-    if (sum > 1.0e-12 * cnt) call CCTK_WARN (0, "Ricci tensor is not symmetric")
+    cnt = cnt + sum(gamma**2)
+    if (nrm > 1.0e-12 * cnt) then
+       print *,"nrm cnt ",nrm,cnt
+       print *,"ddgamma ",ddgamma
+       print *,"dri ",dri
+    end if
+    if (nrm > 1.0e-12 * cnt) call CCTK_WARN (0, "Ricci tensor derivative is not symmetric")
+#endif
   end subroutine calc_ricciderivs
   
 end module ricci
-- 
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