61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
/*
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* Copyright 2010-2015 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#ifndef BX_H_HEADER_GUARD
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#define BX_H_HEADER_GUARD
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#include <stdint.h> // uint32_t
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#include <stdlib.h> // size_t
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#include "config.h"
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#include "macros.h"
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namespace bx
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{
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// http://cnicholson.net/2011/01/stupid-c-tricks-a-better-sizeof_array/
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template<typename T, size_t N> char (&COUNTOF_REQUIRES_ARRAY_ARGUMENT(const T(&)[N]) )[N];
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#define BX_COUNTOF(_x) sizeof(bx::COUNTOF_REQUIRES_ARRAY_ARGUMENT(_x) )
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// Template for avoiding MSVC: C4127: conditional expression is constant
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template<bool>
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inline bool isEnabled()
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{
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return true;
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}
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template<>
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inline bool isEnabled<false>()
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{
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return false;
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}
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#define BX_ENABLED(_x) bx::isEnabled<!!(_x)>()
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inline bool ignoreC4127(bool _x)
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{
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return _x;
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}
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#define BX_IGNORE_C4127(_x) bx::ignoreC4127(!!(_x) )
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template<typename Ty>
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inline void xchg(Ty& _a, Ty& _b)
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{
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Ty tmp = _a; _a = _b; _b = tmp;
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}
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/// Check if pointer is aligned. _align must be power of two.
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inline bool isPtrAligned(const void* _ptr, size_t _align)
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{
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union { const void* ptr; size_t addr; } un;
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un.ptr = _ptr;
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return 0 == (un.addr & (_align-1) );
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}
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} // namespace bx
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// Annoying C++0x stuff..
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namespace std { namespace tr1 {}; using namespace tr1; }
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#endif // BX_H_HEADER_GUARD
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