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// license:BSD-3-Clause
// copyright-holders:Vas Crabb
//============================================================
//
// eivcarm.h
//
// ARM/AArch64 inline implementations for MSVC compiler.
//
//============================================================
#ifndef MAME_OSD_EIVCARM_H
#define MAME_OSD_EIVCARM_H
#pragma once
#include <intrin.h>
#pragma intrinsic(_CountLeadingZeros)
#pragma intrinsic(_CountLeadingZeros64)
#pragma intrinsic(_CountLeadingOnes)
#pragma intrinsic(_CountLeadingOnes64)
/***************************************************************************
INLINE BIT MANIPULATION FUNCTIONS
***************************************************************************/
/*-------------------------------------------------
count_leading_zeros_32 - return the number of
leading zero bits in a 32-bit value
-------------------------------------------------*/
#define count_leading_zeros_32 _count_leading_zeros_32
__forceinline uint8_t _count_leading_zeros_32(uint32_t value)
{
return uint8_t(_CountLeadingZeros(value));
}
/*-------------------------------------------------
count_leading_ones_32 - return the number of
leading one bits in a 32-bit value
-------------------------------------------------*/
#define count_leading_ones_32 _count_leading_ones_32
__forceinline uint8_t _count_leading_ones_32(uint32_t value)
{
return uint8_t(_CountLeadingOnes(value));
}
/*-------------------------------------------------
count_leading_zeros_64 - return the number of
leading zero bits in a 64-bit value
-------------------------------------------------*/
#define count_leading_zeros_64 _count_leading_zeros_64
__forceinline uint8_t _count_leading_zeros_64(uint64_t value)
{
return uint8_t(_CountLeadingZeros64(value));
}
/*-------------------------------------------------
count_leading_ones_64 - return the number of
leading one bits in a 64-bit value
-------------------------------------------------*/
#define count_leading_ones_64 _count_leading_ones_64
__forceinline uint8_t _count_leading_ones_64(uint64_t value)
{
return uint8_t(_CountLeadingOnes64(value));
}
#endif // MAME_OSD_EIVCARM_H
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