Prevent potential math overflow in new profile

Test for max_temp == min_temp to prevent math overflow when calculating
temperature axis in new profile

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/dive.h b/dive.h
index e4c4e354c..c56d569ad 100644
--- a/dive.h
+++ b/dive.h
@@ -20,6 +20,8 @@
     (void) (&_max1 == &_max2);      \
     _max1 > _max2 ? _max1 : _max2; })
 
+#define IS_FP_SAME(_a,_b) (abs((_a) - (_b)) < 0.000001)
+
 #include <libxml/tree.h>
 #include <libxslt/transform.h>