scalblnf

Applicability

Function Usage

Obtains the product of the input data x and 2 raised to the power of n.

Prototype

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inline float scalblnf(float x, int64_t n)

Parameters

Returns

Result of multiplying the input x by 2 raised to the power of n.

• If x is nan, the return value is nan.
• If x is inf, the return value is inf.
• If x is -inf, the return value is -inf.

Restrictions

For SIMT programming, this API is not supported.

Header File to Be Included

To use this API, the simt_api/math_functions.h header file must be included.

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#include "simt_api/math_functions.h"

Examples

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__simt_vf__ __launch_bounds__(1024) inline void KernelScalbn(__gm__ float* dst, __gm__ float* x, __gm__ int64_t* n)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = scalblnf(x[idx], n[idx]);
}