54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
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/*
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* basics.hpp
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* Akupara
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*
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* Created by Udi on 12/19/06.
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* Copyright 2006 __MyCompanyName__. All rights reserved.
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*
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*/
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#if !defined(_AKUPARA_BASICS_HPP__INCLUDED_)
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#define _AKUPARA_BASICS_HPP__INCLUDED_
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#include "WavesPublicAPI/wstdint.h"
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namespace Akupara
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{
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// The ultimate nothingness
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// This is useful for writing constructors that nullify their object, and for testing nullness
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struct null_type
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{
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null_type() {}
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null_type(const null_type *) {} // this allows 0 to be implicitly converted to null_type
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};
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inline null_type null() { return null_type(); }
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// This is a byte, guaranteed to be unsigned regardless of your compiler's char signedness
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typedef uint8_t byte_type;
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// derive from this if your class needs to be noncopyable
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class noncopyable_type
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{
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private:
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noncopyable_type(const noncopyable_type &);
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noncopyable_type &operator=(const noncopyable_type &);
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public:
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noncopyable_type() {}
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};
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} // namespace Akupara
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#if defined(__GNUC__)
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#define AKUPARA_EXPECT_FALSE(x) __builtin_expect(x,false)
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#define AKUPARA_EXPECT_TRUE(x) __builtin_expect(x,true )
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#else
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#define AKUPARA_EXPECT_FALSE(x) x
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#define AKUPARA_EXPECT_TRUE(x) x
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#endif // __GNUC__
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#endif // _AKUPARA_BASICS_HPP__INCLUDED_
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