GRHydro: change CCTK_WARN(0,...) to CCTK_ERROR

this should tell the compiler that the function never returns and help
optimizing the code by indicating eg slow branches of if statements

From: Roland Haas <rhaas@tapir.caltech.edu>

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinEvolve/GRHydro/trunk@497 c83d129a-5a75-4d5a-9c4d-ed3a5855bf45

1 files changed, 9 insertions, 9 deletions

diff --git a/src/GRHydro_HLLEM.F90 b/src/GRHydro_HLLEM.F90
index 780367c..2b025b4 100644
--- a/src/GRHydro_HLLEM.F90
+++ b/src/GRHydro_HLLEM.F90
@@ -119,7 +119,7 @@ subroutine GRHydro_HLLEM(CCTK_ARGUMENTS)
     call SpaceMask_GetStateBits(trivial, "Hydro_RiemannProblemZ", &
          &"trivial")
   else
-    call CCTK_WARN(0, "Flux direction not x,y,z")
+    call CCTK_ERROR("Flux direction not x,y,z")
   end if
 
   ! constraint transport needs to be able to average fluxes in the directions
@@ -229,7 +229,7 @@ subroutine GRHydro_HLLEM(CCTK_ARGUMENTS)
         else if (flux_direction == 3) then
            avg_beta=avg_betaz
         else
-           call CCTK_WARN(0, "Flux direction not x,y,z")
+           call CCTK_ERROR("Flux direction not x,y,z")
         end if
 
         avg_alp = 0.5 * (alp(i,j,k) + alp(i+xoffset,j+yoffset,k+zoffset))
@@ -337,7 +337,7 @@ subroutine GRHydro_HLLEM(CCTK_ARGUMENTS)
             endif
             
           else
-            call CCTK_WARN(0, "Flux direction not x,y,z")
+            call CCTK_ERROR("Flux direction not x,y,z")
           end if
           
         else !!! The end of this branch is right at the bottom of the routine
@@ -349,7 +349,7 @@ subroutine GRHydro_HLLEM(CCTK_ARGUMENTS)
           else if (flux_direction == 3) then
             usendh = uzzh
           else
-            call CCTK_WARN(0, "Flux direction not x,y,z")
+            call CCTK_ERROR("Flux direction not x,y,z")
           end if
           
 !!$        Calculate the jumps in the conserved variables
@@ -541,7 +541,7 @@ subroutine GRHydro_HLLEM(CCTK_ARGUMENTS)
             endif
 
           else
-            call CCTK_WARN(0, "Flux direction not x,y,z")
+            call CCTK_ERROR("Flux direction not x,y,z")
           end if
        
    
@@ -779,7 +779,7 @@ subroutine GRHydro_HLLE_TracerM(CCTK_ARGUMENTS)
     call SpaceMask_GetStateBits(trivial, "Hydro_RiemannProblemZ", &
          &"trivial")
   else
-    call CCTK_WARN(0, "Flux direction not x,y,z")
+    call CCTK_ERROR("Flux direction not x,y,z")
   end if
 
   do k = GRHydro_stencil, cctk_lsh(3) - GRHydro_stencil
@@ -840,7 +840,7 @@ subroutine GRHydro_HLLE_TracerM(CCTK_ARGUMENTS)
            avg_beta = 0.5d0 * (beta3(i+xoffset,j+yoffset,k+zoffset) + &
                beta3(i,j,k))
         else
-           call CCTK_WARN(0, "Flux direction not x,y,z")
+           call CCTK_ERROR("Flux direction not x,y,z")
         end if
 
         avg_alp = 0.5 * (alp(i,j,k) + alp(i+xoffset,j+yoffset,k+zoffset))
@@ -865,7 +865,7 @@ subroutine GRHydro_HLLE_TracerM(CCTK_ARGUMENTS)
         else if (flux_direction == 3) then
           usendh = uzzh
         else
-          call CCTK_WARN(0, "Flux direction not x,y,z")
+          call CCTK_ERROR("Flux direction not x,y,z")
         end if
 
 !!$        b^2 = (1-v^2)B^2+(B dot v)^2 
@@ -929,7 +929,7 @@ subroutine GRHydro_HLLE_TracerM(CCTK_ARGUMENTS)
            fminus(:) = (velzminus(i+xoffset,j+yoffset,k+zoffset) - avg_beta / avg_alp) * &
                 cons_tracerminus(i+xoffset,j+yoffset,k+zoffset,:)
         else
-           call CCTK_WARN(0, "Flux direction not x,y,z")
+           call CCTK_ERROR("Flux direction not x,y,z")
         end if
         
 !!$        Find minimum and maximum wavespeeds