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# cfe/trunk/lib/Headers/__emmintrin_f16c.h

1 | /*===---- __emmintrin_f16c.h - F16C intrinsics -----------------------------=== | ||||
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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 __EMMINTRIN_H | ||||

25 | #error "Never use <__emmintrin_f16c.h> directly; include <emmintrin.h> instead." | ||||

26 | #endif | ||||

27 | | ||||

28 | #ifndef __EMMINTRIN_F16C_H | ||||

29 | #define __EMMINTRIN_F16C_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 | /// 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 | /// 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 | /// 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 | /// 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 /* __EMMINTRIN_F16C_H */ |