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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: hwpf/fapi2/include/buffer_parameters.H $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* EKB Project */
/* */
/* COPYRIGHT 2012,2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* IBM_PROLOG_END_TAG */
/**
* @file buffer_parameters.H
* @brief definitions for fapi2 buffer parameter types
*/
#ifndef __FAPI2_BUFFER_PARAM__
#define __FAPI2_BUFFER_PARAM__
#include <stdint.h>
namespace fapi2
{
/// @cond
/// @brief Traits of buffer parameters - things passed in
/// @tparam T is the type of i_value (typically an integral type)
template<typename T>
class parameterTraits
{
public:
// Why constexpr functions? Enums are hard to do math on, and
// static const doesn't work without -O1 (or greater.) That might
// be a bug in g++ but this works just the same.
constexpr static T mask(void)
{
return T(~0);
}
constexpr static uint32_t byte_length(void)
{
return sizeof(T);
}
constexpr static uint32_t bit_length(void)
{
return sizeof(T) * 8;
}
template<typename U>
inline static void write_element(void* i_data, T i_value, uint32_t i_offset)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
T* ptr = (T*)i_data + (i_offset ^ ((sizeof(U) / sizeof(T)) - 1));
#else
T* ptr = (T*)i_data + i_offset;
#endif
*ptr = i_value;
}
};
/// @endcond
}
#endif
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