h2tanh

Applicability

Function Usage

Obtains the hyperbolic tangent of each element in the input data.

Prototype

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inline half2 h2tanh(half2 x)

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inline bfloat16x2_t h2tanh(bfloat16x2_t x)

Parameters

Returns

Hyperbolic tangent of each element in the input data.

• If the input element is inf, the return value is 1.0.
• If the input element is -inf, the return value is -1.0.
• If the input element is nan, the return value is nan.

Restrictions

For SIMT programming, this API is not supported.

Header File to Be Included

To use the half2 API, the simt_api/asc_fp16.h header file must be included. To use the bfloat16x2_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 KernelTanh(__gm__ half2* dst, __gm__ half2* x)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = h2tanh(x[idx]);
}