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 instruction. 41 /// 42 /// \param __a 43 /// A 16-bit half-precision float value. 44 /// \returns The converted 32-bit float value. 45 static __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 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]: 69 /// 000: Nearest 70 /// 001: Down 71 /// 010: Up 72 /// 011: Truncate 73 /// 1XX: Use MXCSR.RC for rounding 74 /// \returns The converted 16-bit half-precision float value. 75 #define _cvtss_sh(a, imm) \ 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 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]: 94 /// 000: Nearest 95 /// 001: Down 96 /// 010: Up 97 /// 011: Truncate 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) \ 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 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. 116 static __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
