text: /*===---- 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 __LZCNTINTRIN_H
  #define __LZCNTINTRIN_H
  
  /* Define the default attributes for the functions in this file. */
  #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lzcnt")))
  
  #ifndef _MSC_VER
  /// Counts the number of leading zero bits in the operand.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the \c LZCNT instruction.
  ///
  /// \param __X
  ///    An unsigned 16-bit integer whose leading zeros are to be counted.
  /// \returns An unsigned 16-bit integer containing the number of leading zero
  ///    bits in the operand.
  #define __lzcnt16(X) __builtin_ia32_lzcnt_u16((unsigned short)(X))
  #endif // _MSC_VER
  
  /// Counts the number of leading zero bits in the operand.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the \c LZCNT instruction.
  ///
  /// \param __X
  ///    An unsigned 32-bit integer whose leading zeros are to be counted.
  /// \returns An unsigned 32-bit integer containing the number of leading zero
  ///    bits in the operand.
  /// \see _lzcnt_u32
  static __inline__ unsigned int __DEFAULT_FN_ATTRS
  __lzcnt32(unsigned int __X)
  {
    return __builtin_ia32_lzcnt_u32(__X);
  }
  
  /// Counts the number of leading zero bits in the operand.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the \c LZCNT instruction.
  ///
  /// \param __X
  ///    An unsigned 32-bit integer whose leading zeros are to be counted.
  /// \returns An unsigned 32-bit integer containing the number of leading zero
  ///    bits in the operand.
  /// \see __lzcnt32
  static __inline__ unsigned int __DEFAULT_FN_ATTRS
  _lzcnt_u32(unsigned int __X)
  {
    return __builtin_ia32_lzcnt_u32(__X);
  }
  
  #ifdef __x86_64__
  #ifndef _MSC_VER
  /// Counts the number of leading zero bits in the operand.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the \c LZCNT instruction.
  ///
  /// \param __X
  ///    An unsigned 64-bit integer whose leading zeros are to be counted.
  /// \returns An unsigned 64-bit integer containing the number of leading zero
  ///    bits in the operand.
  /// \see _lzcnt_u64
  #define __lzcnt64(X) __builtin_ia32_lzcnt_u64((unsigned long long)(X))
  #endif // _MSC_VER
  
  /// Counts the number of leading zero bits in the operand.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the \c LZCNT instruction.
  ///
  /// \param __X
  ///    An unsigned 64-bit integer whose leading zeros are to be counted.
  /// \returns An unsigned 64-bit integer containing the number of leading zero
  ///    bits in the operand.
  /// \see __lzcnt64
  static __inline__ unsigned long long __DEFAULT_FN_ATTRS
  _lzcnt_u64(unsigned long long __X)
  {
    return __builtin_ia32_lzcnt_u64(__X);
  }
  #endif
  
  #undef __DEFAULT_FN_ATTRS
  
  #endif /* __LZCNTINTRIN_H */
  