f16cintrin.h File Reference

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Macros
#define	__DEFAULT_FN_ATTRS128    __attribute__((__always_inline__, __nodebug__, __target__("f16c"), __min_vector_width__(128)))
#define	__DEFAULT_FN_ATTRS256    __attribute__((__always_inline__, __nodebug__, __target__("f16c"), __min_vector_width__(256)))
#define	_cvtss_sh(a, imm)
	Converts a 32-bit single-precision float value to a 16-bit half-precision float value.
#define	_mm_cvtps_ph(a, imm)    ((__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm)))
	Converts a 128-bit vector containing 32-bit float values into a 128-bit vector containing 16-bit half-precision float values.
#define	_mm256_cvtps_ph(a, imm)    ((__m128i)__builtin_ia32_vcvtps2ph256((__v8sf)(__m256)(a), (imm)))
	Converts a 256-bit vector of [8 x float] into a 128-bit vector containing 16-bit half-precision float values.

Functions
static __inline float __DEFAULT_FN_ATTRS128	_cvtsh_ss (unsigned short __a)
	Converts a 16-bit half-precision float value into a 32-bit float value.
static __inline __m128 __DEFAULT_FN_ATTRS128	_mm_cvtph_ps (__m128i __a)
	Converts a 128-bit vector containing 16-bit half-precision float values into a 128-bit vector containing 32-bit float values.
static __inline __m256 __DEFAULT_FN_ATTRS256	_mm256_cvtph_ps (__m128i __a)
	Converts a 128-bit vector containing 16-bit half-precision float values into a 256-bit vector of [8 x float].

Macro Definition Documentation

__DEFAULT_FN_ATTRS128

#define __DEFAULT_FN_ATTRS128    __attribute__((__always_inline__, __nodebug__, __target__("f16c"), __min_vector_width__(128)))

Definition at line 18 of file f16cintrin.h.

__DEFAULT_FN_ATTRS256

#define __DEFAULT_FN_ATTRS256    __attribute__((__always_inline__, __nodebug__, __target__("f16c"), __min_vector_width__(256)))

Definition at line 20 of file f16cintrin.h.

_cvtss_sh

#define _cvtss_sh	(		a,
			imm
	)

Value:

  __extension__ ({ \
  (unsigned short)(((__v8hi)__builtin_ia32_vcvtps2ph((__v4sf){a, 0, 0, 0}, \
                                                     (imm)))[0]); })

Converts a 32-bit single-precision float value to a 16-bit half-precision float value.

unsigned short _cvtss_sh(float a, const int imm);

This intrinsic corresponds to the VCVTPS2PH instruction.

Parameters

a	A 32-bit single-precision float value to be converted to a 16-bit half-precision float value.
imm	An immediate value controlling rounding using bits [2:0]: 000: Nearest 001: Down 010: Up 011: Truncate 1XX: Use MXCSR.RC for rounding

Returns

The converted 16-bit half-precision float value.

Definition at line 68 of file f16cintrin.h.

_mm256_cvtps_ph

#define _mm256_cvtps_ph	(		a,
			imm
	)		((__m128i)__builtin_ia32_vcvtps2ph256((__v8sf)(__m256)(a), (imm)))

Converts a 256-bit vector of [8 x float] into a 128-bit vector containing 16-bit half-precision float values.

__m128i _mm256_cvtps_ph(__m256 a, const int imm);

This intrinsic corresponds to the VCVTPS2PH instruction.

Parameters

a	A 256-bit vector containing 32-bit single-precision float values to be converted to 16-bit half-precision float values.
imm	An immediate value controlling rounding using bits [2:0]: 000: Nearest 001: Down 010: Up 011: Truncate 1XX: Use MXCSR.RC for rounding

Returns

A 128-bit vector containing the converted 16-bit half-precision float values.

Definition at line 138 of file f16cintrin.h.

_mm_cvtps_ph

#define _mm_cvtps_ph	(		a,
			imm
	)		((__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm)))

Converts a 128-bit vector containing 32-bit float values into a 128-bit vector containing 16-bit half-precision float values.

__m128i _mm_cvtps_ph(__m128 a, const int imm);

This intrinsic corresponds to the VCVTPS2PH instruction.

Parameters

a	A 128-bit vector containing 32-bit float values.
imm	An immediate value controlling rounding using bits [2:0]: 000: Nearest 001: Down 010: Up 011: Truncate 1XX: Use MXCSR.RC for rounding

Returns

A 128-bit vector containing converted 16-bit half-precision float values. The lower 64 bits are used to store the converted 16-bit half-precision floating-point values.

Definition at line 95 of file f16cintrin.h.

Function Documentation

_cvtsh_ss()

static __inline float __DEFAULT_FN_ATTRS128 _cvtsh_ss ( unsigned short  __a )

static

Converts a 16-bit half-precision float value into a 32-bit float value.

This intrinsic corresponds to the VCVTPH2PS instruction.

Parameters

__a	A 16-bit half-precision float value.

Returns

The converted 32-bit float value.

Definition at line 39 of file f16cintrin.h.

References __a, and __v.

_mm256_cvtph_ps()

static __inline __m256 __DEFAULT_FN_ATTRS256 _mm256_cvtph_ps ( __m128i  __a )

static

Converts a 128-bit vector containing 16-bit half-precision float values into a 256-bit vector of [8 x float].

This intrinsic corresponds to the VCVTPH2PS instruction.

Parameters

__a	A 128-bit vector containing 16-bit half-precision float values to be converted to 32-bit single-precision float values.

Returns

A vector of [8 x float] containing the converted 32-bit single-precision float values.

Definition at line 154 of file f16cintrin.h.

References __a.

_mm_cvtph_ps()

static __inline __m128 __DEFAULT_FN_ATTRS128 _mm_cvtph_ps ( __m128i  __a )

static

Converts a 128-bit vector containing 16-bit half-precision float values into a 128-bit vector containing 32-bit float values.

This intrinsic corresponds to the VCVTPH2PS instruction.

Parameters

__a	A 128-bit vector containing 16-bit half-precision float values. The lower 64 bits are used in the conversion.

Returns

A 128-bit vector of [4 x float] containing converted float values.

Definition at line 110 of file f16cintrin.h.

References __a.