f16cintrin.h

Go to the documentation of this file.

/*===---- f16cintrin.h - F16C intrinsics -----------------------------------===
 *
 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 * See https://llvm.org/LICENSE.txt for license information.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 *
 *===-----------------------------------------------------------------------===
 */
 
#if !defined __IMMINTRIN_H
#error "Never use <f16cintrin.h> directly; include <immintrin.h> instead."
#endif
 
#ifndef __F16CINTRIN_H
#define __F16CINTRIN_H
 
/* Define the default attributes for the functions in this file. */
#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)))
 
/* NOTE: Intel documents the 128-bit versions of these as being in emmintrin.h,
 * but that's because icc can emulate these without f16c using a library call.
 * Since we don't do that let's leave these in f16cintrin.h.
 */
 
static __inline float __DEFAULT_FN_ATTRS128
_cvtsh_ss(unsigned short __a)
{
  __v8hi __v = {(short)__a, 0, 0, 0, 0, 0, 0, 0};
  __v4sf __r = __builtin_ia32_vcvtph2ps(__v);
  return __r[0];
}
 
#define _cvtss_sh(a, imm) \
  (unsigned short)(((__v8hi)__builtin_ia32_vcvtps2ph((__v4sf){a, 0, 0, 0}, \
                                                     (imm)))[0])
 
#define _mm_cvtps_ph(a, imm) \
  (__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm))
 
static __inline __m128 __DEFAULT_FN_ATTRS128
_mm_cvtph_ps(__m128i __a)
{
  return (__m128)__builtin_ia32_vcvtph2ps((__v8hi)__a);
}
 
#define _mm256_cvtps_ph(a, imm) \
 (__m128i)__builtin_ia32_vcvtps2ph256((__v8sf)(__m256)(a), (imm))
 
static __inline __m256 __DEFAULT_FN_ATTRS256
_mm256_cvtph_ps(__m128i __a)
{
  return (__m256)__builtin_ia32_vcvtph2ps256((__v8hi)__a);
}
 
#undef __DEFAULT_FN_ATTRS128
#undef __DEFAULT_FN_ATTRS256
 
#endif /* __F16CINTRIN_H */