From bf3875a38e4e832750770836fc9f91e9c178797b Mon Sep 17 00:00:00 2001
From: James Willis <james.s.willis@durham.ac.uk>
Date: Wed, 17 May 2017 11:43:43 +0100
Subject: [PATCH] Comments.

---
 src/cache.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/cache.h b/src/cache.h
index 638127b19a..a2e2f5b684 100644
--- a/src/cache.h
+++ b/src/cache.h
@@ -63,10 +63,19 @@ struct cache {
   /* Particle z velocity. */
   float *restrict vz __attribute__((aligned(CACHE_ALIGN)));
   
+  /* Particle density. */
   float *restrict rho __attribute__((aligned(CACHE_ALIGN)));
+  
+  /* Particle smoothing length gradient. */
   float *restrict grad_h __attribute__((aligned(CACHE_ALIGN)));
+  
+  /* Pressure over density squared. */
   float *restrict pOrho2 __attribute__((aligned(CACHE_ALIGN)));
+      
+  /* Balsara switch. */
   float *restrict balsara __attribute__((aligned(CACHE_ALIGN)));
+      
+  /* Particle sound speed. */
   float *restrict soundspeed __attribute__((aligned(CACHE_ALIGN)));
 
   /* Maximum distance of particles into neighbouring cell. */
-- 
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