1.1.2. Half2 Arithmetic Functions
[Half Precision Intrinsics]
To use these functions include the header file cuda_fp16.h in your program.
Functions
 __device__ __half2 __hadd2 ( const __half2 a, const __half2 b )
 Performs half2 vector addition in roundtonearesteven mode.
 __device__ __half2 __hadd2_sat ( const __half2 a, const __half2 b )
 Performs half2 vector addition in roundtonearesteven mode, with saturation to [0.0, 1.0].
 __device__ __half2 __hfma2 ( const __half2 a, const __half2 b, const __half2 c )
 Performs half2 vector fused multiplyadd in roundtonearesteven mode.
 __device__ __half2 __hfma2_sat ( const __half2 a, const __half2 b, const __half2 c )
 Performs half2 vector fused multiplyadd in roundtonearesteven mode, with saturation to [0.0, 1.0].
 __device__ __half2 __hmul2 ( const __half2 a, const __half2 b )
 Performs half2 vector multiplication in roundtonearesteven mode.
 __device__ __half2 __hmul2_sat ( const __half2 a, const __half2 b )
 Performs half2 vector multiplication in roundtonearesteven mode, with saturation to [0.0, 1.0].
 __device__ __half2 __hneg2 ( const __half2 a )
 Negates both halves of the input half2 number and returns the result.
 __device__ __half2 __hsub2 ( const __half2 a, const __half2 b )
 Performs half2 vector subtraction in roundtonearesteven mode.
 __device__ __half2 __hsub2_sat ( const __half2 a, const __half2 b )
 Performs half2 vector subtraction in roundtonearesteven mode, with saturation to [0.0, 1.0].
Functions
 __device__ __half2 __hadd2 ( const __half2 a, const __half2 b )

Performs half2 vector addition in roundtonearesteven mode.
Returns
Returns the half2 vector result of adding vectors a and b.
Description
Performs half2 vector add of inputs a and b, in roundtonearest mode.
 __device__ __half2 __hadd2_sat ( const __half2 a, const __half2 b )

Performs half2 vector addition in roundtonearesteven mode, with saturation to [0.0, 1.0].
Returns
Returns the half2 vector result of adding vectors a and b with saturation.
Description
Performs half2 vector add of inputs a and b, in roundtonearest mode, and clamps the results to range [0.0, 1.0]. NaN results are flushed to +0.0.
 __device__ __half2 __hfma2 ( const __half2 a, const __half2 b, const __half2 c )

Performs half2 vector fused multiplyadd in roundtonearesteven mode.
Returns
Returns the half2 vector result of the fused multiplyadd operation on vectors a, b, and c.
Description
Performs half2 vector multiply on inputs a and b, then performs a half2 vector add of the result with c, rounding the result once in roundtonearesteven mode.
 __device__ __half2 __hfma2_sat ( const __half2 a, const __half2 b, const __half2 c )

Performs half2 vector fused multiplyadd in roundtonearesteven mode, with saturation to [0.0, 1.0].
Returns
Returns the half2 vector result of the fused multiplyadd operation on vectors a, b, and c with saturation.
Description
Performs half2 vector multiply on inputs a and b, then performs a half2 vector add of the result with c, rounding the result once in roundtonearesteven mode, and clamps the results to range [0.0, 1.0]. NaN results are flushed to +0.0.
 __device__ __half2 __hmul2 ( const __half2 a, const __half2 b )

Performs half2 vector multiplication in roundtonearesteven mode.
Returns
Returns the half2 vector result of multiplying vectors a and b.
Description
Performs half2 vector multiplication of inputs a and b, in roundtonearesteven mode.
 __device__ __half2 __hmul2_sat ( const __half2 a, const __half2 b )

Performs half2 vector multiplication in roundtonearesteven mode, with saturation to [0.0, 1.0].
Returns
Returns the half2 vector result of multiplying vectors a and b with saturation.
Description
Performs half2 vector multiplication of inputs a and b, in roundtonearesteven mode, and clamps the results to range [0.0, 1.0]. NaN results are flushed to +0.0.
 __device__ __half2 __hneg2 ( const __half2 a )

Negates both halves of the input half2 number and returns the result.
Returns
Returns half2 number with both halves negated.
Description
Negates both halves of the input half2 number a and returns the result.
 __device__ __half2 __hsub2 ( const __half2 a, const __half2 b )

Performs half2 vector subtraction in roundtonearesteven mode.
Returns
Returns the half2 vector result of subtraction vector b from a.
Description
Subtracts half2 input vector b from input vector a in roundtonearesteven mode.
 __device__ __half2 __hsub2_sat ( const __half2 a, const __half2 b )

Performs half2 vector subtraction in roundtonearesteven mode, with saturation to [0.0, 1.0].
Returns
Returns the half2 vector result of subtraction vector b from a with saturation.
Description
Subtracts half2 input vector b from input vector a in roundtonearesteven mode, and clamps the results to range [0.0, 1.0]. NaN results are flushed to +0.0.