1.2.7. Half Math Functions
[Half Precision Intrinsics]
To use these functions, include the header file cuda_fp16.h in your program.
Functions
- __device__ __half hceil ( const __half h )
- Calculate ceiling of the input argument.
- __device__ __half hcos ( const __half a )
- Calculates half cosine in round-to-nearest-even mode.
- __device__ __half hexp ( const __half a )
- Calculates half natural exponential function in round-to-nearest-even mode.
- __device__ __half hexp10 ( const __half a )
- Calculates half decimal exponential function in round-to-nearest-even mode.
- __device__ __half hexp2 ( const __half a )
- Calculates half binary exponential function in round-to-nearest-even mode.
- __device__ __half hfloor ( const __half h )
- Calculate the largest integer less than or equal to h.
- __device__ __half hlog ( const __half a )
- Calculates half natural logarithm in round-to-nearest-even mode.
- __device__ __half hlog10 ( const __half a )
- Calculates half decimal logarithm in round-to-nearest-even mode.
- __device__ __half hlog2 ( const __half a )
- Calculates half binary logarithm in round-to-nearest-even mode.
- __device__ __half hrcp ( const __half a )
- Calculates half reciprocal in round-to-nearest-even mode.
- __device__ __half hrint ( const __half h )
- Round input to nearest integer value in half-precision floating-point number.
- __device__ __half hrsqrt ( const __half a )
- Calculates half reciprocal square root in round-to-nearest-even mode.
- __device__ __half hsin ( const __half a )
- Calculates half sine in round-to-nearest-even mode.
- __device__ __half hsqrt ( const __half a )
- Calculates half square root in round-to-nearest-even mode.
- __device__ __half htrunc ( const __half h )
- Truncate input argument to the integral part.
Functions
- __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-even 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-even 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-even 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-even 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.