[Mesa-dev] [PATCH 1/3] gallium: Add a uif() helper function to complement fui()

Eric Anholt eric at anholt.net
Thu Jul 17 16:56:39 PDT 2014


I found myself often wanting this when I'm printing out a uint32_t mapping
of some GPU data, and I want to put in an interpretation of that value as
a float.
---
 src/gallium/auxiliary/util/u_math.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index b9ed197..68ca3f2 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -616,6 +616,14 @@ fui( float f )
    return fi.ui;
 }
 
+static INLINE float
+uif(uint32_t ui)
+{
+        union fi fi;
+        fi.ui = ui;
+        return fi.f;
+}
+
 
 /**
  * Convert ubyte to float in [0, 1].
-- 
2.0.0



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