Initial release

engine/vendor/vst3sdk/pluginterfaces/base/futils.h

@@ -0,0 +1,107 @@
+//-----------------------------------------------------------------------------
+// Project     : SDK Core
+//
+// Category    : SDK Core Interfaces
+// Filename    : pluginterfaces/base/futils.h
+// Created by  : Steinberg, 01/2004
+// Description : Basic utilities
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses. 
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+#include "pluginterfaces/base/ftypes.h"
+
+namespace Steinberg {
+//----------------------------------------------------------------------------
+// min/max/etc. template functions
+template <class T>
+inline const T& Min (const T& a, const T& b)
+{
+	return b < a ? b : a;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline const T& Max (const T& a, const T& b)
+{
+	return a < b ? b : a;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline T Abs (const T& value)
+{
+	return (value >= (T)0) ? value : -value;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline T Sign (const T& value)
+{
+	return (value == (T)0) ? 0 : ((value >= (T)0) ? 1 : -1);
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline T Bound (T minval, T maxval, T x)
+{
+	if (x < minval)
+		return minval;
+	if (x > maxval)
+		return maxval;
+	return x;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+void Swap (T& t1, T& t2)
+{
+	T tmp = t1;
+	t1 = t2;
+	t2 = tmp;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+bool IsApproximateEqual (T t1, T t2, T epsilon)
+{
+	if (t1 == t2)
+		return true;
+	T diff = t1 - t2;
+	if (diff < 0.0)
+		diff = -diff;
+	if (diff < epsilon)
+		return true;
+	return false;
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline T ToNormalized (const T value, const int32 numSteps)
+{
+	return value / T (numSteps);
+}
+
+//----------------------------------------------------------------------------
+template <class T>
+inline int32 FromNormalized (const T& norm, const int32 numSteps)
+{
+	return Min<int32> (numSteps, int32 (norm * (numSteps + 1)));
+}
+
+//----------------------------------------------------------------------------
+// Four character constant
+#ifndef CCONST
+#define CCONST(a, b, c, d) \
+	 ((((int32) (a)) << 24) | (((int32) (b)) << 16) | (((int32) (c)) << 8) | (((int32) (d)) << 0))
+#endif
+
+//------------------------------------------------------------------------
+} // namespace Steinberg