From: Pyry Haulos <phaulos@google.com>
Date: Fri, 11 Dec 2015 22:20:53 +0000 (-0800)
Subject: Add deIsPowerOfTwo64
X-Git-Tag: upstream/0.1.0~1333
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f0cae7f05f80b99386bd8e897d4865965df138c6;p=platform%2Fupstream%2FVK-GL-CTS.git

Add deIsPowerOfTwo64

Change-Id: I2a3c40fe727c49f944e7608bc283eae4dd454dcc
---

diff --git a/framework/delibs/debase/deInt32.h b/framework/delibs/debase/deInt32.h
index 4806fe6..6550267 100644
--- a/framework/delibs/debase/deInt32.h
+++ b/framework/delibs/debase/deInt32.h
@@ -206,6 +206,18 @@ DE_INLINE deBool deIsPowerOfTwo32 (int a)
 }
 
 /*--------------------------------------------------------------------*//*!
+ * \brief Check if a value is a power-of-two.
+ * \param a Input value.
+ * \return True if input is a power-of-two value, false otherwise.
+ *
+ * \note Also returns true for zero.
+ *//*--------------------------------------------------------------------*/
+DE_INLINE deBool deIsPowerOfTwo64 (deUint64 a)
+{
+	return ((a & (a - 1ull)) == 0);
+}
+
+/*--------------------------------------------------------------------*//*!
  * \brief Check if an integer is aligned to given power-of-two size.
  * \param a		Input value.
  * \param align	Alignment to check for.