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f16cintrin.h
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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
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19  * THE SOFTWARE.
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21  *===-----------------------------------------------------------------------===
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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.
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 </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.
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 */
static __inline float __DEFAULT_FN_ATTRS _cvtsh_ss(unsigned short __a)
Converts a 16-bit half-precision float value into a 32-bit float value.
Definition: f16cintrin.h:46
#define __DEFAULT_FN_ATTRS
Definition: f16cintrin.h:32
do v
Definition: arm_acle.h:78
static __inline __m128 __DEFAULT_FN_ATTRS _mm_cvtph_ps(__m128i __a)
Converts a 128-bit vector containing 16-bit half-precision float values into a 128-bit vector contain...
Definition: f16cintrin.h:117