From b57e18c35cf651addecdfb2339768fbb29c257f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Fonseca?= <jfonseca@vmware.com>
Date: Thu, 27 May 2010 16:16:11 +0100
Subject: util: Add inline function for approximate floating point comparison.

---
 src/gallium/auxiliary/util/u_math.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/gallium/auxiliary/util')

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index d1ec13d..ee52c09 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -335,6 +335,15 @@ util_iround(float f)
 }
 
 
+/**
+ * Approximate floating point comparison
+ */
+static INLINE boolean
+util_is_approx(float a, float b, float tol)
+{
+   return fabs(b - a) <= tol;
+}
+
 
 /**
  * Test if x is NaN or +/- infinity.
-- 
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