Convert float vector to half vector and write to a pointer to memory.

void vstorea_half n(float n data,
                    size_t offset,
                    half *p)

void vstorea_half n _rte(float n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtz(float n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtp(float n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtn(float n data,
                         size_t offset,
                         half *p)
void vstorea_half n(double n data,
                    size_t offset,
                    half *p)

void vstorea_half n _rte(double n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtz(double n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtp(double n data,
                         size_t offset,
                         half *p)

void vstorea_half n _rtn(double n data,
                         size_t offset,
                         half *p)

Description

The floatn (or doublen) value given by data is converted to a halfn value using the appropriate rounding mode.

For n = 2, 4, 8 and 16, the halfn value is written to the address computed as (p + (offset * n)). The address computed as (p + (offset * n)) must be aligned to sizeof (halfn) bytes.

For n = 3, the half3 value is written to the address computed as (p + (offset * 4)). The address computed as (p + (offset * 4)) must be aligned to sizeof (half) * 4 bytes.

vstorea_halfn uses the default rounding mode. The default rounding mode is round to the nearest even.

An application that wants to use half and halfn types will need to include the #pragma OPENCL EXTENSION cl_khr_fp16 : enable directive.

Notes

Vector Data Load and Store Functions allow you to read and write vector types from a pointer to memory.

The suffix n in the function names (i.e. vload`n`, vstore`n` etc.) represent n-element vectors, where n = 2, 3, 4, 8 or 16.

The results of vector data load and store functions are undefined if the address being read from or written to is not correctly aligned. The pointer argument p can be a pointer to global, local, or private memory for store functions. The pointer argument p can be a pointer to global, local, constant or private memory for load functions.

Note
The vector data load and store functions variants that take pointer arguments which point to the generic address space are also supported.

vstorea_half3 writes x, y, z components from a 3-component vector to address (p + (offset * 4)).

Also see

Specification