rintf

Applicability

Function Usage

Returns the integer closest to the input data. If there are two equally close integers, the even one will be returned.

Prototype

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inline float rintf(float x)

Parameters

Returns

Integer value closest to the input floating-point number. Special scenarios are described as follows:

• If x is 0, the return value is 0.
• If x is 0.5, the return value is 0.
• If x is 1.5, the return value is 2.
• 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 KernelRint(__gm__ float* dst, __gm__ float* x)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    dst[idx] = rintf(x[idx]);
}