Functions

__device__ ​ __half atomicAdd ( const __half* address, const __half val )

Adds val to the value stored at address in global or shared memory, and writes this value back to address. This operation is performed in one atomic operation.

Parameters

address

- half*. An address in global or shared memory.

val

- half. The value to be added.

Returns

half

• The

  old value read from address.

Description

The location of address must be in global or shared memory. This operation has undefined behavior otherwise. This operation is only supported by devices of compute capability 7.x and higher.

Note:

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

__device__ ​ __half hceil ( const __half h )

Calculate ceiling of the input argument.

Parameters

h

- half. Is only being read.

Returns

half

• The

  smallest integer value not less than h.

Description

Compute the smallest integer value not less than h.

__device__ ​ __half hcos ( const __half a )

Calculates half cosine in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  cosine of a.

Description

Calculates half cosine of input a in round-to-nearest-even mode.

__device__ ​ __half hexp ( const __half a )

Calculates half natural exponential function in round-to-nearest mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  natural exponential function on a.

Description

Calculates half natural exponential function of input a in round-to-nearest-even mode.

__device__ ​ __half hexp10 ( const __half a )

Calculates half decimal exponential function in round-to-nearest mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  decimal exponential function on a.

Description

Calculates half decimal exponential function of input a in round-to-nearest-even mode.

__device__ ​ __half hexp2 ( const __half a )

Calculates half binary exponential function in round-to-nearest mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  binary exponential function on a.

Description

Calculates half binary exponential function of input a in round-to-nearest-even mode.

__device__ ​ __half hfloor ( const __half h )

Calculate the largest integer less than or equal to h.

Parameters

h

- half. Is only being read.

Returns

half

• The

  largest integer value which is less than or equal to h.

Description

Calculate the largest integer value which is less than or equal to h.

__device__ ​ __half hlog ( const __half a )

Calculates half natural logarithm in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  natural logarithm of a.

Description

Calculates half natural logarithm of input a in round-to-nearest-even mode.

__device__ ​ __half hlog10 ( const __half a )

Calculates half decimal logarithm in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  decimal logarithm of a.

Description

Calculates half decimal logarithm of input a in round-to-nearest-even mode.

__device__ ​ __half hlog2 ( const __half a )

Calculates half binary logarithm in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  binary logarithm of a.

Description

Calculates half binary logarithm of input a in round-to-nearest-even mode.

__device__ ​ __half hrcp ( const __half a )

Calculates half reciprocal in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  reciprocal of a.

Description

Calculates half reciprocal of input a in round-to-nearest-even mode.

__device__ ​ __half hrint ( const __half h )

Round input to nearest integer value in half-precision floating-point number.

Parameters

h

- half. Is only being read.

Returns

half

• The

  nearest integer to h.

Description

Round h to the nearest integer value in half-precision floating-point format, with halfway cases rounded to the nearest even integer value.

__device__ ​ __half hrsqrt ( const __half a )

Calculates half reciprocal square root in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  reciprocal square root of a.

Description

Calculates half reciprocal square root of input a in round-to-nearest mode.

__device__ ​ __half hsin ( const __half a )

Calculates half sine in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  sine of a.

Description

Calculates half sine of input a in round-to-nearest-even mode.

__device__ ​ __half hsqrt ( const __half a )

Calculates half square root in round-to-nearest-even mode.

Parameters

a

- half. Is only being read.

Returns

half

• The

  square root of a.

Description

Calculates half square root of input a in round-to-nearest-even mode.

__device__ ​ __half htrunc ( const __half h )

Truncate input argument to the integral part.

Parameters

h

- half. Is only being read.

Returns

half

• The

  truncated integer value.

Description

Round h to the nearest integer value that does not exceed h in magnitude.