From 1bde8a6516aba1c8b9b2393fe16aca72a23afb8a Mon Sep 17 00:00:00 2001
From: Matthieu Schaller <matthieu.schaller@durham.ac.uk>
Date: Thu, 10 Mar 2016 16:40:09 +0000
Subject: [PATCH] Make sure no 0 or negative ID is read in for DM particles
---
src/common_io.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/common_io.c b/src/common_io.c
index 56008c763a..5f345b2ac5 100644
--- a/src/common_io.c
+++ b/src/common_io.c
@@ -487,7 +487,11 @@ void prepare_dm_gparts(struct gpart* gparts, int Ndm) {
/* Let's give all these gparts a negative id */
for (int i = 0; i < Ndm; ++i) {
- gparts[i].id = -abs(gparts[i].id);
+
+ /* 0 ir negative ids are not allowed */
+ if(gparts[i].id <= 0) error("0 or negative if for DM particle");
+
+ gparts[i].id = -gparts[i].id;
}
}
--
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