LCOM1920-T02G10

/*===---- lzcntintrin.h - LZCNT intrinsics ---------------------------------===

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 *

 *===-----------------------------------------------------------------------===

 */

#if !defined __X86INTRIN_H && !defined __IMMINTRIN_H

#error "Never use <lzcntintrin.h> directly; include <x86intrin.h> instead."

#endif

#ifndef __LZCNT__

# error "LZCNT instruction is not enabled"

#endif /* __LZCNT__ */

#ifndef __LZCNTINTRIN_H

#define __LZCNTINTRIN_H

static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__))

__lzcnt16(unsigned short __X)

{

  return __X ? __builtin_clzs(__X) : 16;

}

static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))

__lzcnt32(unsigned int __X)

{

  return __X ? __builtin_clz(__X) : 32;

}

static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__))

_lzcnt_u32(unsigned int __X)

{

  return __X ? __builtin_clz(__X) : 32;

}

#ifdef __x86_64__

static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))

__lzcnt64(unsigned long long __X)

{

  return __X ? __builtin_clzll(__X) : 64;

}

static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__))

_lzcnt_u64(unsigned long long __X)

{

  return __X ? __builtin_clzll(__X) : 64;

}

#endif

#endif /* __LZCNTINTRIN_H */