1.2.8. Half2 Math Functions

[Half Precision Intrinsics]

To use these functions, include the header file cuda_fp16.h in your program.

Functions

__device____half2 h2ceil ( const __half2 h )
Calculate half2 vector ceiling of the input argument.
__device____half2 h2cos ( const __half2 a )
Calculates half2 vector cosine in round-to-nearest-even mode.
__device____half2 h2exp ( const __half2 a )
Calculates half2 vector exponential function in round-to-nearest-even mode.
__device____half2 h2exp10 ( const __half2 a )
Calculates half2 vector decimal exponential function in round-to-nearest-even mode.
__device____half2 h2exp2 ( const __half2 a )
Calculates half2 vector binary exponential function in round-to-nearest-even mode.
__device____half2 h2floor ( const __half2 h )
Calculate the largest integer less than or equal to h.
__device____half2 h2log ( const __half2 a )
Calculates half2 vector natural logarithm in round-to-nearest-even mode.
__device____half2 h2log10 ( const __half2 a )
Calculates half2 vector decimal logarithm in round-to-nearest-even mode.
__device____half2 h2log2 ( const __half2 a )
Calculates half2 vector binary logarithm in round-to-nearest-even mode.
__device____half2 h2rcp ( const __half2 a )
Calculates half2 vector reciprocal in round-to-nearest-even mode.
__device____half2 h2rint ( const __half2 h )
Round input to nearest integer value in half-precision floating-point number.
__device____half2 h2rsqrt ( const __half2 a )
Calculates half2 vector reciprocal square root in round-to-nearest-even mode.
__device____half2 h2sin ( const __half2 a )
Calculates half2 vector sine in round-to-nearest-even mode.
__device____half2 h2sqrt ( const __half2 a )
Calculates half2 vector square root in round-to-nearest-even mode.
__device____half2 h2trunc ( const __half2 h )
Truncate half2 vector input argument to the integral part.

Functions

__device____half2 h2ceil ( const __half2 h )
Calculate half2 vector ceiling of the input argument.
Parameters
h
- half2. Is only being read.
Returns

half2

  • The vector of smallest integers not less than h.
Description

For each component of vector h compute the smallest integer value not less than h.

__device____half2 h2cos ( const __half2 a )
Calculates half2 vector cosine in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise cosine on vector a.
Description

Calculates half2 cosine of input vector a in round-to-nearest-even mode.

__device____half2 h2exp ( const __half2 a )
Calculates half2 vector exponential function in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise exponential function on vector a.
Description

Calculates half2 exponential function of input vector a in round-to-nearest-even mode.

__device____half2 h2exp10 ( const __half2 a )
Calculates half2 vector decimal exponential function in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise decimal exponential function on vector a.
Description

Calculates half2 decimal exponential function of input vector a in round-to-nearest-even mode.

__device____half2 h2exp2 ( const __half2 a )
Calculates half2 vector binary exponential function in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise binary exponential function on vector a.
Description

Calculates half2 binary exponential function of input vector a in round-to-nearest-even mode.

__device____half2 h2floor ( const __half2 h )
Calculate the largest integer less than or equal to h.
Parameters
h
- half2. Is only being read.
Returns

half2

  • The vector of largest integers which is less than or equal to h.
Description

For each component of vector h calculate the largest integer value which is less than or equal to h.

__device____half2 h2log ( const __half2 a )
Calculates half2 vector natural logarithm in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise natural logarithm on vector a.
Description

Calculates half2 natural logarithm of input vector a in round-to-nearest-even mode.

__device____half2 h2log10 ( const __half2 a )
Calculates half2 vector decimal logarithm in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise decimal logarithm on vector a.
Description

Calculates half2 decimal logarithm of input vector a in round-to-nearest-even mode.

__device____half2 h2log2 ( const __half2 a )
Calculates half2 vector binary logarithm in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise binary logarithm on vector a.
Description

Calculates half2 binary logarithm of input vector a in round-to-nearest-even mode.

__device____half2 h2rcp ( const __half2 a )
Calculates half2 vector reciprocal in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise reciprocal on vector a.
Description

Calculates half2 reciprocal of input vector a in round-to-nearest-even mode.

__device____half2 h2rint ( const __half2 h )
Round input to nearest integer value in half-precision floating-point number.
Parameters
h
- half2. Is only being read.
Returns

half2

  • The vector of rounded integer values.
Description

Round each component of half2 vector h to the nearest integer value in half-precision floating-point format, with halfway cases rounded to the nearest even integer value.

__device____half2 h2rsqrt ( const __half2 a )
Calculates half2 vector reciprocal square root in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise reciprocal square root on vector a.
Description

Calculates half2 reciprocal square root of input vector a in round-to-nearest-even mode.

__device____half2 h2sin ( const __half2 a )
Calculates half2 vector sine in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise sine on vector a.
Description

Calculates half2 sine of input vector a in round-to-nearest-even mode.

__device____half2 h2sqrt ( const __half2 a )
Calculates half2 vector square root in round-to-nearest-even mode.
Parameters
a
- half2. Is only being read.
Returns

half2

  • The elementwise square root on vector a.
Description

Calculates half2 square root of input vector a in round-to-nearest-even mode.

__device____half2 h2trunc ( const __half2 h )
Truncate half2 vector input argument to the integral part.
Parameters
h
- half2. Is only being read.
Returns

half2

  • The truncated h.
Description

Round each component of vector h to the nearest integer value that does not exceed h in magnitude.