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
_cvtsh_ss(unsigned short __a)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
_mm_cvtph_ps(__m128i __a)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