From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 30 Aug 2011 23:58:07 +0000 (-0700)
Subject: Fix up temperature conversion
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=716a680920cdd27129c36ea284e44920d0f2d79d;p=ext%2Fsubsurface.git

Fix up temperature conversion

Oops. No, the water temperature wasn't really 500 degC.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/parse.c b/parse.c
index 52609a6..06149c3 100644
--- a/parse.c
+++ b/parse.c
@@ -90,7 +90,9 @@ static int to_feet(depth_t depth)
 
 static int to_C(temperature_t temp)
 {
-	return (temp.mkelvin + 272150) / 1000;
+	if (!temp.mkelvin)
+		return 0;
+	return (temp.mkelvin - 273150) / 1000;
 }
 
 static int to_PSI(pressure_t pressure)