Functions

__host__ ​ __device__ ​ float2 __bfloat1622float2 ( const __nv_bfloat162 a )

Converts both halves of nv_bfloat162 to float2 and returns the result.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

float2

• a converted to float2.

Description

Converts both halves of nv_bfloat162 input a to float2 and returns the result.

__host__ ​ __device__ ​__nv_bfloat162 __bfloat162bfloat162 ( const __nv_bfloat16 a )

Returns nv_bfloat162 with both halves equal to the input value.

Parameters

a

- nv_bfloat16. Is only being read.

Returns

nv_bfloat162

• The vector which has both its halves equal to the input a.

Description

Returns nv_bfloat162 number with both halves equal to the input anv_bfloat16 number.

__host__ ​ __device__ ​ signed char __bfloat162char_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed char in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

signed char

• h converted to a signed char.

Description

Convert the nv_bfloat16 floating-point value h to a signed char in round-towards-zero mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ float __bfloat162float ( const __nv_bfloat16 a )

Converts nv_bfloat16 number to float.

Parameters

a

- float. Is only being read.

Returns

float

• a converted to float.

Description

Converts nv_bfloat16 number a to float.

__device__ ​ int __bfloat162int_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

int

• h converted to a signed integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed integer in round-down mode. NaN inputs are converted to 0.

__device__ ​ int __bfloat162int_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

int

• h converted to a signed integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed integer in round-to-nearest-even mode. NaN inputs are converted to 0.

__device__ ​ int __bfloat162int_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

int

• h converted to a signed integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed integer in round-up mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ int __bfloat162int_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

int

• h converted to a signed integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed integer in round-towards-zero mode. NaN inputs are converted to 0.

__device__ ​ long long int __bfloat162ll_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed 64-bit integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

long long int

• h converted to a signed 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed 64-bit integer in round-down mode. NaN inputs return a long long int with hex value of 0x8000000000000000.

__device__ ​ long long int __bfloat162ll_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed 64-bit integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

long long int

• h converted to a signed 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed 64-bit integer in round-to-nearest-even mode. NaN inputs return a long long int with hex value of 0x8000000000000000.

__device__ ​ long long int __bfloat162ll_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed 64-bit integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

long long int

• h converted to a signed 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed 64-bit integer in round-up mode. NaN inputs return a long long int with hex value of 0x8000000000000000.

__host__ ​ __device__ ​ long long int __bfloat162ll_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed 64-bit integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

long long int

• h converted to a signed 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed 64-bit integer in round-towards-zero mode. NaN inputs return a long long int with hex value of 0x8000000000000000.

__device__ ​ short int __bfloat162short_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed short integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

short int

• h converted to a signed short integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed short integer in round-down mode. NaN inputs are converted to 0.

__device__ ​ short int __bfloat162short_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed short integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

short int

• h converted to a signed short integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed short integer in round-to-nearest-even mode. NaN inputs are converted to 0.

__device__ ​ short int __bfloat162short_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed short integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

short int

• h converted to a signed short integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed short integer in round-up mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ short int __bfloat162short_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to a signed short integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

short int

• h converted to a signed short integer.

Description

Convert the nv_bfloat16 floating-point value h to a signed short integer in round-towards-zero mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ unsigned char __bfloat162uchar_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned char in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned char

• h converted to an unsigned char.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned char in round-towards-zero mode. NaN inputs are converted to 0.

__device__ ​ unsigned int __bfloat162uint_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned int

• h converted to an unsigned integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned integer in round-down mode. NaN inputs are converted to 0.

__device__ ​ unsigned int __bfloat162uint_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned int

• h converted to an unsigned integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned integer in round-to-nearest-even mode. NaN inputs are converted to 0.

__device__ ​ unsigned int __bfloat162uint_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned int

• h converted to an unsigned integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned integer in round-up mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ unsigned int __bfloat162uint_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned int

• h converted to an unsigned integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned integer in round-towards-zero mode. NaN inputs are converted to 0.

__device__ ​ unsigned long long int __bfloat162ull_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned 64-bit integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned long long int

• h converted to an unsigned 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned 64-bit integer in round-down mode. NaN inputs return 0x8000000000000000.

__device__ ​ unsigned long long int __bfloat162ull_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned 64-bit integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned long long int

• h converted to an unsigned 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned 64-bit integer in round-to-nearest-even mode. NaN inputs return 0x8000000000000000.

__device__ ​ unsigned long long int __bfloat162ull_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned 64-bit integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned long long int

• h converted to an unsigned 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned 64-bit integer in round-up mode. NaN inputs return 0x8000000000000000.

__host__ ​ __device__ ​ unsigned long long int __bfloat162ull_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned 64-bit integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned long long int

• h converted to an unsigned 64-bit integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned 64-bit integer in round-towards-zero mode. NaN inputs return 0x8000000000000000.

__device__ ​ unsigned short int __bfloat162ushort_rd ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned short integer in round-down mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned short int

• h converted to an unsigned short integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned short integer in round-down mode. NaN inputs are converted to 0.

__device__ ​ unsigned short int __bfloat162ushort_rn ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned short integer in round-to-nearest-even mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned short int

• h converted to an unsigned short integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned short integer in round-to-nearest-even mode. NaN inputs are converted to 0.

__device__ ​ unsigned short int __bfloat162ushort_ru ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned short integer in round-up mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned short int

• h converted to an unsigned short integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned short integer in round-up mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ unsigned short int __bfloat162ushort_rz ( const __nv_bfloat16 h )

Convert a nv_bfloat16 to an unsigned short integer in round-towards-zero mode.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned short int

• h converted to an unsigned short integer.

Description

Convert the nv_bfloat16 floating-point value h to an unsigned short integer in round-towards-zero mode. NaN inputs are converted to 0.

__host__ ​ __device__ ​ short int __bfloat16_as_short ( const __nv_bfloat16 h )

Reinterprets bits in a nv_bfloat16 as a signed short integer.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

short int

• The reinterpreted value.

Description

Reinterprets the bits in the nv_bfloat16 floating-point number h as a signed short integer.

__host__ ​ __device__ ​ unsigned short int __bfloat16_as_ushort ( const __nv_bfloat16 h )

Reinterprets bits in a nv_bfloat16 as an unsigned short integer.

Parameters

h

- nv_bfloat16. Is only being read.

Returns

unsigned short int

• The reinterpreted value.

Description

Reinterprets the bits in the nv_bfloat16 floating-point h as an unsigned short number.

__host__ ​ __device__ ​__nv_bfloat16 __double2bfloat16 ( const double  a )

Converts double number to nv_bfloat16 precision in round-to-nearest-even mode and returns nv_bfloat16 with converted value.

Parameters

a

- double. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts double number a to nv_bfloat16 precision in round-to-nearest-even mode.

__host__ ​ __device__ ​__nv_bfloat162 __float22bfloat162_rn ( const float2 a )

Converts both components of float2 number to nv_bfloat16 precision in round-to-nearest-even mode and returns nv_bfloat162 with converted values.

Parameters

a

- float2. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 which has corresponding halves equal to the converted float2 components.

Description

Converts both components of float2 to nv_bfloat16 precision in round-to-nearest-even mode and combines the results into one nv_bfloat162 number. Low 16 bits of the return value correspond to a.x and high 16 bits of the return value correspond to a.y.

__host__ ​ __device__ ​__nv_bfloat16 __float2bfloat16 ( const float  a )

Converts float number to nv_bfloat16 precision in round-to-nearest-even mode and returns nv_bfloat16 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts float number a to nv_bfloat16 precision in round-to-nearest-even mode.

__host__ ​ __device__ ​__nv_bfloat162 __float2bfloat162_rn ( const float  a )

Converts input to nv_bfloat16 precision in round-to-nearest-even mode and populates both halves of nv_bfloat162 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 value with both halves equal to the converted nv_bfloat16 precision number.

Description

Converts input a to nv_bfloat16 precision in round-to-nearest-even mode and populates both halves of nv_bfloat162 with converted value.

__host__ ​ __device__ ​__nv_bfloat16 __float2bfloat16_rd ( const float  a )

Converts float number to nv_bfloat16 precision in round-down mode and returns nv_bfloat16 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts float number a to nv_bfloat16 precision in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __float2bfloat16_rn ( const float  a )

Converts float number to nv_bfloat16 precision in round-to-nearest-even mode and returns nv_bfloat16 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts float number a to nv_bfloat16 precision in round-to-nearest-even mode.

__host__ ​ __device__ ​__nv_bfloat16 __float2bfloat16_ru ( const float  a )

Converts float number to nv_bfloat16 precision in round-up mode and returns nv_bfloat16 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts float number a to nv_bfloat16 precision in round-up mode.

__host__ ​ __device__ ​__nv_bfloat16 __float2bfloat16_rz ( const float  a )

Converts float number to nv_bfloat16 precision in round-towards-zero mode and returns nv_bfloat16 with converted value.

Parameters

a

- float. Is only being read.

Returns

nv_bfloat16

• a converted to nv_bfloat16.

Description

Converts float number a to nv_bfloat16 precision in round-towards-zero mode.

__host__ ​ __device__ ​__nv_bfloat162 __floats2bfloat162_rn ( const float  a, const float  b )

Converts both input floats to nv_bfloat16 precision in round-to-nearest-even mode and returns nv_bfloat162 with converted values.

Parameters

a

- float. Is only being read.

b

- float. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 value with corresponding halves equal to the converted input floats.

Description

Converts both input floats to nv_bfloat16 precision in round-to-nearest-even mode and combines the results into one nv_bfloat162 number. Low 16 bits of the return value correspond to the input a, high 16 bits correspond to the input b.

__host__ ​ __device__ ​__nv_bfloat162 __halves2bfloat162 ( const __nv_bfloat16 a, const __nv_bfloat16 b )

Combines two nv_bfloat16 numbers into one nv_bfloat162 number.

Parameters

a

- nv_bfloat16. Is only being read.

b

- nv_bfloat16. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 with one nv_bfloat16 equal to a and the other to b.

Description

Combines two input nv_bfloat16 number a and b into one nv_bfloat162 number. Input a is stored in low 16 bits of the return value, input b is stored in high 16 bits of the return value.

__host__ ​ __device__ ​__nv_bfloat16 __high2bfloat16 ( const __nv_bfloat162 a )

Returns high 16 bits of nv_bfloat162 input.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

nv_bfloat16

• The high 16 bits of the input.

Description

Returns high 16 bits of nv_bfloat162 input a.

__host__ ​ __device__ ​__nv_bfloat162 __high2bfloat162 ( const __nv_bfloat162 a )

Extracts high 16 bits from nv_bfloat162 input.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 with both halves equal to the high 16 bits of the input.

Description

Extracts high 16 bits from nv_bfloat162 input a and returns a new nv_bfloat162 number which has both halves equal to the extracted bits.

__host__ ​ __device__ ​ float __high2float ( const __nv_bfloat162 a )

Converts high 16 bits of nv_bfloat162 to float and returns the result.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

float

• The high 16 bits of a converted to float.

Description

Converts high 16 bits of nv_bfloat162 input a to 32-bit floating-point number and returns the result.

__host__ ​ __device__ ​__nv_bfloat162 __highs2bfloat162 ( const __nv_bfloat162 a, const __nv_bfloat162 b )

Extracts high 16 bits from each of the two nv_bfloat162 inputs and combines into one nv_bfloat162 number.

Parameters

a

- nv_bfloat162. Is only being read.

b

- nv_bfloat162. Is only being read.

Returns

nv_bfloat162

• The high 16 bits of a and of b.

Description

Extracts high 16 bits from each of the two nv_bfloat162 inputs and combines into one nv_bfloat162 number. High 16 bits from input a is stored in low 16 bits of the return value, high 16 bits from input b is stored in high 16 bits of the return value.

__device__ ​__nv_bfloat16 __int2bfloat16_rd ( const int  i )

Convert a signed integer to a nv_bfloat16 in round-down mode.

Parameters

i

- int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __int2bfloat16_rn ( const int  i )

Convert a signed integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __int2bfloat16_ru ( const int  i )

Convert a signed integer to a nv_bfloat16 in round-up mode.

Parameters

i

- int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __int2bfloat16_rz ( const int  i )

Convert a signed integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__device__ ​__nv_bfloat16 __ldca ( const __nv_bfloat16* ptr )

Generates a `ld.global.ca` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldca ( const __nv_bfloat162* ptr )

Generates a `ld.global.ca` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ldcg ( const __nv_bfloat16* ptr )

Generates a `ld.global.cg` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldcg ( const __nv_bfloat162* ptr )

Generates a `ld.global.cg` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ldcs ( const __nv_bfloat16* ptr )

Generates a `ld.global.cs` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldcs ( const __nv_bfloat162* ptr )

Generates a `ld.global.cs` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ldcv ( const __nv_bfloat16* ptr )

Generates a `ld.global.cv` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldcv ( const __nv_bfloat162* ptr )

Generates a `ld.global.cv` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ldg ( const __nv_bfloat16* ptr )

Generates a `ld.global.nc` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldg ( const __nv_bfloat162* ptr )

Generates a `ld.global.nc` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ldlu ( const __nv_bfloat16* ptr )

Generates a `ld.global.lu` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat162 __ldlu ( const __nv_bfloat162* ptr )

Generates a `ld.global.lu` load instruction.

Parameters

ptr

- memory location

Returns

The value pointed by `ptr`

Description

__device__ ​__nv_bfloat16 __ll2bfloat16_rd ( const long long int i )

Convert a signed 64-bit integer to a nv_bfloat16 in round-down mode.

Parameters

i

- long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed 64-bit integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __ll2bfloat16_rn ( const long long int i )

Convert a signed 64-bit integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed 64-bit integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __ll2bfloat16_ru ( const long long int i )

Convert a signed 64-bit integer to a nv_bfloat16 in round-up mode.

Parameters

i

- long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed 64-bit integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __ll2bfloat16_rz ( const long long int i )

Convert a signed 64-bit integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed 64-bit integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__host__ ​ __device__ ​__nv_bfloat16 __low2bfloat16 ( const __nv_bfloat162 a )

Returns low 16 bits of nv_bfloat162 input.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

nv_bfloat16

• Returns nv_bfloat16 which contains low 16 bits of the input a.

Description

Returns low 16 bits of nv_bfloat162 input a.

__host__ ​ __device__ ​__nv_bfloat162 __low2bfloat162 ( const __nv_bfloat162 a )

Extracts low 16 bits from nv_bfloat162 input.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

nv_bfloat162

• The nv_bfloat162 with both halves equal to the low 16 bits of the input.

Description

Extracts low 16 bits from nv_bfloat162 input a and returns a new nv_bfloat162 number which has both halves equal to the extracted bits.

__host__ ​ __device__ ​ float __low2float ( const __nv_bfloat162 a )

Converts low 16 bits of nv_bfloat162 to float and returns the result.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

float

• The low 16 bits of a converted to float.

Description

Converts low 16 bits of nv_bfloat162 input a to 32-bit floating-point number and returns the result.

__host__ ​ __device__ ​__nv_bfloat162 __lowhigh2highlow ( const __nv_bfloat162 a )

Swaps both halves of the nv_bfloat162 input.

Parameters

a

- nv_bfloat162. Is only being read.

Returns

nv_bfloat162

• a with its halves being swapped.

Description

Swaps both halves of the nv_bfloat162 input and returns a new nv_bfloat162 number with swapped halves.

__host__ ​ __device__ ​__nv_bfloat162 __lows2bfloat162 ( const __nv_bfloat162 a, const __nv_bfloat162 b )

Extracts low 16 bits from each of the two nv_bfloat162 inputs and combines into one nv_bfloat162 number.

Parameters

a

- nv_bfloat162. Is only being read.

b

- nv_bfloat162. Is only being read.

Returns

nv_bfloat162

• The low 16 bits of a and of b.

Description

Extracts low 16 bits from each of the two nv_bfloat162 inputs and combines into one nv_bfloat162 number. Low 16 bits from input a is stored in low 16 bits of the return value, low 16 bits from input b is stored in high 16 bits of the return value.

__device__ ​__nv_bfloat16 __shfl_down_sync ( const unsigned mask, const __nv_bfloat16 var, const unsigned int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread with higher ID relative to the caller.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat16. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 2-byte word referenced by var from the source thread ID as nv_bfloat16. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by adding delta to the caller's thread ID. The value of var held by the resulting thread ID is returned: this has the effect of shifting var down the warp by delta threads. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. As for __shfl_up_sync(), the ID number of the source thread will not wrap around the value of width and so the upper delta threads will remain unchanged.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat162 __shfl_down_sync ( const unsigned mask, const __nv_bfloat162 var, const unsigned int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread with higher ID relative to the caller.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat162. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 4-byte word referenced by var from the source thread ID as nv_bfloat162. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by adding delta to the caller's thread ID. The value of var held by the resulting thread ID is returned: this has the effect of shifting var down the warp by delta threads. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. As for __shfl_up_sync(), the ID number of the source thread will not wrap around the value of width and so the upper delta threads will remain unchanged.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat16 __shfl_sync ( const unsigned mask, const __nv_bfloat16 var, const int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Direct copy from indexed thread.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat16. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 2-byte word referenced by var from the source thread ID as nv_bfloat16. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Returns the value of var held by the thread whose ID is given by delta. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. If delta is outside the range [0:width-1], the value returned corresponds to the value of var held by the delta modulo width (i.e. within the same subsection). width must have a value which is a power of 2; results are undefined if width is not a power of 2, or is a number greater than warpSize.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat162 __shfl_sync ( const unsigned mask, const __nv_bfloat162 var, const int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Direct copy from indexed thread.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat162. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 4-byte word referenced by var from the source thread ID as nv_bfloat162. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Returns the value of var held by the thread whose ID is given by delta. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. If delta is outside the range [0:width-1], the value returned corresponds to the value of var held by the delta modulo width (i.e. within the same subsection). width must have a value which is a power of 2; results are undefined if width is not a power of 2, or is a number greater than warpSize.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat16 __shfl_up_sync ( const unsigned mask, const __nv_bfloat16 var, const unsigned int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread with lower ID relative to the caller.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat16. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 2-byte word referenced by var from the source thread ID as nv_bfloat16. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by subtracting delta from the caller's lane ID. The value of var held by the resulting lane ID is returned: in effect, var is shifted up the warp by delta threads. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. The source thread index will not wrap around the value of width, so effectively the lower delta threads will be unchanged. width must have a value which is a power of 2; results are undefined if width is not a power of 2, or is a number greater than warpSize.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat162 __shfl_up_sync ( const unsigned mask, const __nv_bfloat162 var, const unsigned int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread with lower ID relative to the caller.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat162. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 4-byte word referenced by var from the source thread ID as nv_bfloat162. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by subtracting delta from the caller's lane ID. The value of var held by the resulting lane ID is returned: in effect, var is shifted up the warp by delta threads. If width is less than warpSize then each subsection of the warp behaves as a separate entity with a starting logical thread ID of 0. The source thread index will not wrap around the value of width, so effectively the lower delta threads will be unchanged. width must have a value which is a power of 2; results are undefined if width is not a power of 2, or is a number greater than warpSize.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat16 __shfl_xor_sync ( const unsigned mask, const __nv_bfloat16 var, const int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread based on bitwise XOR of own thread ID.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat16. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 2-byte word referenced by var from the source thread ID as nv_bfloat16. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by performing a bitwise XOR of the caller's thread ID with mask: the value of var held by the resulting thread ID is returned. If width is less than warpSize then each group of width consecutive threads are able to access elements from earlier groups of threads, however if they attempt to access elements from later groups of threads their own value of var will be returned. This mode implements a butterfly addressing pattern such as is used in tree reduction and broadcast.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat162 __shfl_xor_sync ( const unsigned mask, const __nv_bfloat162 var, const int  delta, const int  width = warpSize )

Exchange a variable between threads within a warp. Copy from a thread based on bitwise XOR of own thread ID.

Parameters

mask

- unsigned int. Is only being read.

var

- nv_bfloat162. Is only being read.

delta

- int. Is only being read.

width

- int. Is only being read.

Returns

Returns the 4-byte word referenced by var from the source thread ID as nv_bfloat162. If the source thread ID is out of range or the source thread has exited, the calling thread's own var is returned.

Description

Calculates a source thread ID by performing a bitwise XOR of the caller's thread ID with mask: the value of var held by the resulting thread ID is returned. If width is less than warpSize then each group of width consecutive threads are able to access elements from earlier groups of threads, however if they attempt to access elements from later groups of threads their own value of var will be returned. This mode implements a butterfly addressing pattern such as is used in tree reduction and broadcast.

Note:

For more details for this function see the Warp Shuffle Functions section in the CUDA C++ Programming Guide.

__device__ ​__nv_bfloat16 __short2bfloat16_rd ( const short int i )

Convert a signed short integer to a nv_bfloat16 in round-down mode.

Parameters

i

- short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed short integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __short2bfloat16_rn ( const short int i )

Convert a signed short integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed short integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __short2bfloat16_ru ( const short int i )

Convert a signed short integer to a nv_bfloat16 in round-up mode.

Parameters

i

- short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed short integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __short2bfloat16_rz ( const short int i )

Convert a signed short integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the signed short integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__host__ ​ __device__ ​__nv_bfloat16 __short_as_bfloat16 ( const short int i )

Reinterprets bits in a signed short integer as a nv_bfloat16.

Parameters

i

- short int. Is only being read.

Returns

nv_bfloat16

• The reinterpreted value.

Description

Reinterprets the bits in the signed short integer i as a nv_bfloat16 floating-point number.

__device__ ​ void __stcg ( const __nv_bfloat16* ptr, const __nv_bfloat16 value )

Generates a `st.global.cg` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stcg ( const __nv_bfloat162* ptr, const __nv_bfloat162 value )

Generates a `st.global.cg` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stcs ( const __nv_bfloat16* ptr, const __nv_bfloat16 value )

Generates a `st.global.cs` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stcs ( const __nv_bfloat162* ptr, const __nv_bfloat162 value )

Generates a `st.global.cs` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stwb ( const __nv_bfloat16* ptr, const __nv_bfloat16 value )

Generates a `st.global.wb` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stwb ( const __nv_bfloat162* ptr, const __nv_bfloat162 value )

Generates a `st.global.wb` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stwt ( const __nv_bfloat16* ptr, const __nv_bfloat16 value )

Generates a `st.global.wt` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​ void __stwt ( const __nv_bfloat162* ptr, const __nv_bfloat162 value )

Generates a `st.global.wt` store instruction.

Parameters

ptr

- memory location

value

- the value to be stored

Description

__device__ ​__nv_bfloat16 __uint2bfloat16_rd ( const unsigned int  i )

Convert an unsigned integer to a nv_bfloat16 in round-down mode.

Parameters

i

- unsigned int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __uint2bfloat16_rn ( const unsigned int  i )

Convert an unsigned integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- unsigned int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __uint2bfloat16_ru ( const unsigned int  i )

Convert an unsigned integer to a nv_bfloat16 in round-up mode.

Parameters

i

- unsigned int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __uint2bfloat16_rz ( const unsigned int  i )

Convert an unsigned integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- unsigned int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__device__ ​__nv_bfloat16 __ull2bfloat16_rd ( const unsigned long long int i )

Convert an unsigned 64-bit integer to a nv_bfloat16 in round-down mode.

Parameters

i

- unsigned long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned 64-bit integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __ull2bfloat16_rn ( const unsigned long long int i )

Convert an unsigned 64-bit integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- unsigned long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned 64-bit integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __ull2bfloat16_ru ( const unsigned long long int i )

Convert an unsigned 64-bit integer to a nv_bfloat16 in round-up mode.

Parameters

i

- unsigned long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned 64-bit integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __ull2bfloat16_rz ( const unsigned long long int i )

Convert an unsigned 64-bit integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- unsigned long long int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned 64-bit integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__device__ ​__nv_bfloat16 __ushort2bfloat16_rd ( const unsigned short int i )

Convert an unsigned short integer to a nv_bfloat16 in round-down mode.

Parameters

i

- unsigned short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned short integer value i to a nv_bfloat16 floating-point value in round-down mode.

__host__ ​ __device__ ​__nv_bfloat16 __ushort2bfloat16_rn ( const unsigned short int i )

Convert an unsigned short integer to a nv_bfloat16 in round-to-nearest-even mode.

Parameters

i

- unsigned short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned short integer value i to a nv_bfloat16 floating-point value in round-to-nearest-even mode.

__device__ ​__nv_bfloat16 __ushort2bfloat16_ru ( const unsigned short int i )

Convert an unsigned short integer to a nv_bfloat16 in round-up mode.

Parameters

i

- unsigned short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned short integer value i to a nv_bfloat16 floating-point value in round-up mode.

__device__ ​__nv_bfloat16 __ushort2bfloat16_rz ( const unsigned short int i )

Convert an unsigned short integer to a nv_bfloat16 in round-towards-zero mode.

Parameters

i

- unsigned short int. Is only being read.

Returns

nv_bfloat16

• i converted to nv_bfloat16.

Description

Convert the unsigned short integer value i to a nv_bfloat16 floating-point value in round-towards-zero mode.

__host__ ​ __device__ ​__nv_bfloat16 __ushort_as_bfloat16 ( const unsigned short int i )

Reinterprets bits in an unsigned short integer as a nv_bfloat16.

Parameters

i

- unsigned short int. Is only being read.

Returns

nv_bfloat16

• The reinterpreted value.

Description

Reinterprets the bits in the unsigned short integer i as a nv_bfloat16 floating-point number.

__host__ ​ __device__ ​__nv_bfloat162 make_bfloat162 ( const __nv_bfloat16 x, const __nv_bfloat16 y )

Vector function, combines two nv_bfloat16 numbers into one nv_bfloat162 number.

Parameters

x

- nv_bfloat16. Is only being read.

y

- nv_bfloat16. Is only being read.

Returns

__nv_bfloat162

• The __nv_bfloat162 vector with one half equal to x and the other to y.

Description

Combines two input nv_bfloat16 number x and y into one nv_bfloat162 number. Input x is stored in low 16 bits of the return value, input y is stored in high 16 bits of the return value.