23 inline namespace _V1 {
25 #ifdef __INTEL_PREVIEW_BREAKING_CHANGES
31 namespace ext::oneapi {
42 #ifdef __SYCL_DEVICE_ONLY__
57 #ifndef __INTEL_PREVIEW_BREAKING_CHANGES
80 #ifdef __INTEL_PREVIEW_BREAKING_CHANGES
94 uint32_t roundingBias = ((intStorage >> 16) & 0x1) + 0x00007FFF;
95 return static_cast<uint16_t
>((intStorage + roundingBias) >> 16);
100 #if defined(__SYCL_DEVICE_ONLY__)
101 #if defined(__NVPTX__)
102 #if (__SYCL_CUDA_ARCH__ >= 800)
104 asm(
"cvt.rn.bf16.f32 %0, %1;" :
"=h"(res) :
"f"(a));
107 return from_float_fallback(a);
109 #elif defined(__AMDGCN__)
110 return from_float_fallback(a);
115 return from_float_fallback(a);
119 #if defined(__SYCL_DEVICE_ONLY__) && defined(__SPIR__)
126 intStorage =
a << 16;
144 value = from_float(rhs);
152 value = from_float(rhs);
157 operator float()
const {
return to_float(
value); }
163 explicit operator bool() {
return to_float(
value) != 0.0f; }
167 #if defined(__SYCL_DEVICE_ONLY__) && defined(__NVPTX__) && \
168 (__SYCL_CUDA_ARCH__ >= 800)
170 asm(
"neg.bf16 %0, %1;" :
"=h"(res) :
"h"(lhs.
value));
172 #elif defined(__SYCL_DEVICE_ONLY__) && defined(__SPIR__)
181 friend bfloat16 &operator op(bfloat16 & lhs) { \
182 float f = to_float(lhs.value); \
183 lhs.value = from_float(op f); \
186 friend bfloat16 operator op(bfloat16 &lhs, int) { \
187 bfloat16 old = lhs; \
197 friend bfloat16 &operator op(bfloat16 & lhs, const bfloat16 & rhs) { \
198 float f = static_cast<float>(lhs); \
199 f op static_cast<float>(rhs); \
209 #define OP(type, op) \
210 friend type operator op(const bfloat16 &lhs, const bfloat16 &rhs) { \
211 return type{static_cast<float>(lhs) op static_cast<float>(rhs)}; \
213 template <typename T> \
214 friend std::enable_if_t<std::is_convertible_v<T, float>, type> operator op( \
215 const bfloat16 & lhs, const T & rhs) { \
216 return type{static_cast<float>(lhs) op static_cast<float>(rhs)}; \
218 template <typename T> \
219 friend std::enable_if_t<std::is_convertible_v<T, float>, type> operator op( \
220 const T & lhs, const bfloat16 & rhs) { \
221 return type{static_cast<float>(lhs) op static_cast<float>(rhs)}; \
240 O << static_cast<float>(rhs);
245 float ValFloat = 0.0f;
__DPCPP_SYCL_EXTERNAL uint16_t __devicelib_ConvertFToBF16INTEL(const float &) noexcept
__DPCPP_SYCL_EXTERNAL float __devicelib_ConvertBF16ToFINTEL(const uint16_t &) noexcept
bfloat16(const sycl::half &a)
constexpr bfloat16(const bfloat16 &)=default
friend bfloat16 operator-(bfloat16 &lhs)
constexpr bfloat16(bfloat16 &&)=default
friend std::istream & operator>>(std::istream &I, bfloat16 &rhs)
friend std::ostream & operator<<(std::ostream &O, bfloat16 const &rhs)
bfloat16 & operator=(const sycl::half &rhs)
constexpr bfloat16 & operator=(const bfloat16 &rhs)=default
bfloat16 & operator=(const float &rhs)
detail::Bfloat16StorageT value
defined(__INTEL_PREVIEW_BREAKING_CHANGES)
#define __DPCPP_SYCL_EXTERNAL
std::array< Bfloat16StorageT, 4 > Vec4StorageT
std::array< Bfloat16StorageT, 3 > Vec3StorageT
std::array< Bfloat16StorageT, 16 > Vec16StorageT
std::array< Bfloat16StorageT, 8 > Vec8StorageT
std::array< Bfloat16StorageT, 2 > Vec2StorageT
bfloat16 bitsToBfloat16(const Bfloat16StorageT Value)
bool float_is_nan(float x)
Bfloat16StorageT bfloat16ToBits(const bfloat16 &Value)
uint16_t Bfloat16StorageT
__attribute__((always_inline)) auto invoke_simd(sycl
The invoke_simd free function invokes a SIMD function using all work-items in a sub_group.
T detail::marray_element_t< T > y T T T maxval[i] T T T a
detail::common_rel_ret_t< T > isnan(T x)
sycl::detail::half_impl::half half
_Abi const simd< _Tp, _Abi > & noexcept