1/*===---- f16cintrin.h - F16C intrinsics -----------------------------------=== 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to deal 5 * in the Software without restriction, including without limitation the rights 6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 * copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 * THE SOFTWARE. 20 * 21 *===-----------------------------------------------------------------------=== 22 */ 23 24#if !defined __X86INTRIN_H && !defined __EMMINTRIN_H && !defined __IMMINTRIN_H 25#error "Never use <f16cintrin.h> directly; include <emmintrin.h> instead." 26#endif 27 28#ifndef __F16CINTRIN_H 29#define __F16CINTRIN_H 30 31/* Define the default attributes for the functions in this file. */ 32#define __DEFAULT_FN_ATTRS \ 33 __attribute__((__always_inline__, __nodebug__, __target__("f16c"))) 34 35/// \brief Converts a 16-bit half-precision float value into a 32-bit float 36/// value. 37/// 38/// \headerfile <x86intrin.h> 39/// 40/// This intrinsic corresponds to the <c> VCVTPH2PS </c> instruction. 41/// 42/// \param __a 43/// A 16-bit half-precision float value. 44/// \returns The converted 32-bit float value. 45static __inline float __DEFAULT_FN_ATTRS 46_cvtsh_ss(unsigned short __a) 47{ 48 __v8hi v = {(short)__a, 0, 0, 0, 0, 0, 0, 0}; 49 __v4sf r = __builtin_ia32_vcvtph2ps(v); 50 return r[0]; 51} 52 53/// \brief Converts a 32-bit single-precision float value to a 16-bit 54/// half-precision float value. 55/// 56/// \headerfile <x86intrin.h> 57/// 58/// \code 59/// unsigned short _cvtss_sh(float a, const int imm); 60/// \endcode 61/// 62/// This intrinsic corresponds to the <c> VCVTPS2PH </c> instruction. 63/// 64/// \param a 65/// A 32-bit single-precision float value to be converted to a 16-bit 66/// half-precision float value. 67/// \param imm 68/// An immediate value controlling rounding using bits [2:0]: \n 69/// 000: Nearest \n 70/// 001: Down \n 71/// 010: Up \n 72/// 011: Truncate \n 73/// 1XX: Use MXCSR.RC for rounding 74/// \returns The converted 16-bit half-precision float value. 75#define _cvtss_sh(a, imm) __extension__ ({ \ 76 (unsigned short)(((__v8hi)__builtin_ia32_vcvtps2ph((__v4sf){a, 0, 0, 0}, \ 77 (imm)))[0]); }) 78 79/// \brief Converts a 128-bit vector containing 32-bit float values into a 80/// 128-bit vector containing 16-bit half-precision float values. 81/// 82/// \headerfile <x86intrin.h> 83/// 84/// \code 85/// __m128i _mm_cvtps_ph(__m128 a, const int imm); 86/// \endcode 87/// 88/// This intrinsic corresponds to the <c> VCVTPS2PH </c> instruction. 89/// 90/// \param a 91/// A 128-bit vector containing 32-bit float values. 92/// \param imm 93/// An immediate value controlling rounding using bits [2:0]: \n 94/// 000: Nearest \n 95/// 001: Down \n 96/// 010: Up \n 97/// 011: Truncate \n 98/// 1XX: Use MXCSR.RC for rounding 99/// \returns A 128-bit vector containing converted 16-bit half-precision float 100/// values. The lower 64 bits are used to store the converted 16-bit 101/// half-precision floating-point values. 102#define _mm_cvtps_ph(a, imm) __extension__ ({ \ 103 (__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm)); }) 104 105/// \brief Converts a 128-bit vector containing 16-bit half-precision float 106/// values into a 128-bit vector containing 32-bit float values. 107/// 108/// \headerfile <x86intrin.h> 109/// 110/// This intrinsic corresponds to the <c> VCVTPH2PS </c> instruction. 111/// 112/// \param __a 113/// A 128-bit vector containing 16-bit half-precision float values. The lower 114/// 64 bits are used in the conversion. 115/// \returns A 128-bit vector of [4 x float] containing converted float values. 116static __inline __m128 __DEFAULT_FN_ATTRS 117_mm_cvtph_ps(__m128i __a) 118{ 119 return (__m128)__builtin_ia32_vcvtph2ps((__v8hi)__a); 120} 121 122#undef __DEFAULT_FN_ATTRS 123 124#endif /* __F16CINTRIN_H */ 125