text: /*===---- f16cintrin.h - F16C 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 __EMMINTRIN_H && !defined __IMMINTRIN_H
  #error "Never use <f16cintrin.h> directly; include <emmintrin.h> instead."
  #endif
  
  #ifndef __F16CINTRIN_H
  #define __F16CINTRIN_H
  
  /* Define the default attributes for the functions in this file. */
  #define __DEFAULT_FN_ATTRS \
    __attribute__((__always_inline__, __nodebug__, __target__("f16c")))
  
  /// \brief Converts a 16-bit half-precision float value into a 32-bit float
  ///    value.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the <c> VCVTPH2PS </c> instruction.
  ///
  /// \param __a
  ///    A 16-bit half-precision float value.
  /// \returns The converted 32-bit float value.
  static __inline float __DEFAULT_FN_ATTRS
  _cvtsh_ss(unsigned short __a)
  {
    __v8hi v = {(short)__a, 0, 0, 0, 0, 0, 0, 0};
    __v4sf r = __builtin_ia32_vcvtph2ps(v);
    return r[0];
  }
  
  /// \brief Converts a 32-bit single-precision float value to a 16-bit
  ///    half-precision float value.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// \code
  /// unsigned short _cvtss_sh(float a, const int imm);
  /// \endcode
  ///
  /// This intrinsic corresponds to the <c> VCVTPS2PH </c> instruction.
  ///
  /// \param a
  ///    A 32-bit single-precision float value to be converted to a 16-bit
  ///    half-precision float value.
  /// \param imm
  ///    An immediate value controlling rounding using bits [2:0]: \n
  ///    000: Nearest \n
  ///    001: Down \n
  ///    010: Up \n
  ///    011: Truncate \n
  ///    1XX: Use MXCSR.RC for rounding
  /// \returns The converted 16-bit half-precision float value.
  #define _cvtss_sh(a, imm) __extension__ ({ \
    (unsigned short)(((__v8hi)__builtin_ia32_vcvtps2ph((__v4sf){a, 0, 0, 0}, \
                                                       (imm)))[0]); })
  
  /// \brief Converts a 128-bit vector containing 32-bit float values into a
  ///    128-bit vector containing 16-bit half-precision float values.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// \code
  /// __m128i _mm_cvtps_ph(__m128 a, const int imm);
  /// \endcode
  ///
  /// This intrinsic corresponds to the <c> VCVTPS2PH </c> instruction.
  ///
  /// \param a
  ///    A 128-bit vector containing 32-bit float values.
  /// \param imm
  ///    An immediate value controlling rounding using bits [2:0]: \n
  ///    000: Nearest \n
  ///    001: Down \n
  ///    010: Up \n
  ///    011: Truncate \n
  ///    1XX: Use MXCSR.RC for rounding
  /// \returns A 128-bit vector containing converted 16-bit half-precision float
  ///    values. The lower 64 bits are used to store the converted 16-bit
  ///    half-precision floating-point values.
  #define _mm_cvtps_ph(a, imm) __extension__ ({ \
    (__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm)); })
  
  /// \brief Converts a 128-bit vector containing 16-bit half-precision float
  ///    values into a 128-bit vector containing 32-bit float values.
  ///
  /// \headerfile <x86intrin.h>
  ///
  /// This intrinsic corresponds to the <c> VCVTPH2PS </c> instruction.
  ///
  /// \param __a
  ///    A 128-bit vector containing 16-bit half-precision float values. The lower
  ///    64 bits are used in the conversion.
  /// \returns A 128-bit vector of [4 x float] containing converted float values.
  static __inline __m128 __DEFAULT_FN_ATTRS
  _mm_cvtph_ps(__m128i __a)
  {
    return (__m128)__builtin_ia32_vcvtph2ps((__v8hi)__a);
  }
  
  #undef __DEFAULT_FN_ATTRS
  
  #endif /* __F16CINTRIN_H */
  