Functions

__host__ ​ __device__ ​ bool __heq ( const __half a, const __half b )

Performs half if-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of if-equal comparison of a and b.

Description

Performs half if-equal comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hequ ( const __half a, const __half b )

Performs half unordered if-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered if-equal comparison of a and b.

Description

Performs half if-equal comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​ bool __hge ( const __half a, const __half b )

Performs half greater-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of greater-equal comparison of a and b.

Description

Performs half greater-equal comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hgeu ( const __half a, const __half b )

Performs half unordered greater-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered greater-equal comparison of a and b.

Description

Performs half greater-equal comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​ bool __hgt ( const __half a, const __half b )

Performs half greater-than comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of greater-than comparison of a and b.

Description

Performs half greater-than comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hgtu ( const __half a, const __half b )

Performs half unordered greater-than comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered greater-than comparison of a and b.

Description

Performs half greater-than comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​ int __hisinf ( const __half a )

Checks if the input half number is infinite.

Parameters

a

- half. Is only being read.

Returns

int

• -1 iff a is equal to negative infinity,
• 1 iff a is equal to positive infinity,
• 0 otherwise.

Description

Checks if the input half number a is infinite.

__host__ ​ __device__ ​ bool __hisnan ( const __half a )

Determine whether half argument is a NaN.

Parameters

a

- half. Is only being read.

Returns

bool

• true iff argument is NaN.

Description

Determine whether half value a is a NaN.

__host__ ​ __device__ ​ bool __hle ( const __half a, const __half b )

Performs half less-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of less-equal comparison of a and b.

Description

Performs half less-equal comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hleu ( const __half a, const __half b )

Performs half unordered less-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered less-equal comparison of a and b.

Description

Performs half less-equal comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​ bool __hlt ( const __half a, const __half b )

Performs half less-than comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of less-than comparison of a and b.

Description

Performs half less-than comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hltu ( const __half a, const __half b )

Performs half unordered less-than comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered less-than comparison of a and b.

Description

Performs half less-than comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​__half __hmax ( const __half a, const __half b )

Calculates half maximum of two input values.

Description

Calculates half max(a, b) defined as (a > b) ? a : b.

• If either of inputs is NaN, the other input is returned.

• If both inputs are NaNs, then canonical NaN is returned.

• If values of both inputs are 0.0, then +0.0 > -0.0

__host__ ​ __device__ ​__half __hmax_nan ( const __half a, const __half b )

Calculates half maximum of two input values, NaNs pass through.

Description

Calculates half max(a, b) defined as (a > b) ? a : b.

• If either of inputs is NaN, then canonical NaN is returned.

• If values of both inputs are 0.0, then +0.0 > -0.0

__host__ ​ __device__ ​__half __hmin ( const __half a, const __half b )

Calculates half minimum of two input values.

Description

Calculates half min(a, b) defined as (a < b) ? a : b.

• If either of inputs is NaN, the other input is returned.

• If both inputs are NaNs, then canonical NaN is returned.

• If values of both inputs are 0.0, then +0.0 > -0.0

__host__ ​ __device__ ​__half __hmin_nan ( const __half a, const __half b )

Calculates half minimum of two input values, NaNs pass through.

Description

Calculates half min(a, b) defined as (a < b) ? a : b.

• If either of inputs is NaN, then canonical NaN is returned.

• If values of both inputs are 0.0, then +0.0 > -0.0

__host__ ​ __device__ ​ bool __hne ( const __half a, const __half b )

Performs half not-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of not-equal comparison of a and b.

Description

Performs half not-equal comparison of inputs a and b. NaN inputs generate false results.

__host__ ​ __device__ ​ bool __hneu ( const __half a, const __half b )

Performs half unordered not-equal comparison.

Parameters

a

- half. Is only being read.

b

- half. Is only being read.

Returns

bool

• The boolean result of unordered not-equal comparison of a and b.

Description

Performs half not-equal comparison of inputs a and b. NaN inputs generate true results.

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator!= ( const __half& lh, const __half& rh )

Description

Performs half unordered compare not-equal operation. See also __hneu( __half, __half)

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator< ( const __half& lh, const __half& rh )

Description

Performs half ordered less-than compare operation. See also __hlt( __half, __half)

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator<= ( const __half& lh, const __half& rh )

Description

Performs half ordered less-or-equal compare operation. See also __hle( __half, __half)

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator== ( const __half& lh, const __half& rh )

Description

Performs half ordered compare equal operation. See also __heq( __half, __half)

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator> ( const __half& lh, const __half& rh )

Description

Performs half ordered greater-than compare operation. See also __hgt( __half, __half)

__host__ ​ __device__ ​ __CUDA_FP16_FORCEINLINE__ bool operator>= ( const __half& lh, const __half& rh )

Description

Performs half ordered greater-or-equal compare operation. See also __hge( __half, __half)