From: José Fonseca <jfonseca@vmware.com>
Date: Thu, 27 May 2010 15:16:11 +0000 (+0100)
Subject: util: Add inline function for approximate floating point comparison.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b57e18c35cf651addecdfb2339768fbb29c257f5;p=mesa.git

util: Add inline function for approximate floating point comparison.
---

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index d1ec13def30..ee52c09e347 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.