__hisinf

Applicability

Function Usage

Checks whether a floating-point number is infinite.

Prototype

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inline bool __hisinf(half x)

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inline bool __hisinf(bfloat16_t x)

Parameters

Returns

• false: The input is not infinite.
• true: The input is inf or -inf.

Restrictions

For SIMT programming, this API is not supported.

Header File to Be Included

To use the half API, the simt_api/asc_fp16.h header file must be included. To use the bfloat16_t API, the simt_api/asc_bf16.h header file must be included.

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#include "simt_api/asc_fp16.h"

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#include "simt_api/asc_bf16.h"

Examples

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__simt_vf__ __launch_bounds__(1024) inline void KernelIsInf(__gm__ bool* dst, __gm__ half* x)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = __hisinf(x[idx]);
}