cbrtf

Applicability

Product

Supported

Atlas 350 Accelerator Card

Atlas A3 training product/Atlas A3 inference product

x

Atlas A2 training product/Atlas A2 inference product

x

Atlas 200I/500 A2 inference product

x

Atlas inference product AI Core

x

Atlas inference product Vector Core

x

Atlas training product

x

Function Usage

Obtains the cube root of the input data x.

Prototype

1
inline float cbrtf(float x)

Parameters

Table 1 Function parameter description

Parameter

Input/Output

Description

x

Input

Source operand.

Returns

Cube root of x.

  • If x is 0, the return value is 0.
  • 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.

1
#include "simt_api/math_functions.h"

Examples

For SIMD and SIMT programming:
1
2
3
4
5
__simt_vf__ __launch_bounds__(1024) inline void KernelCbrt(__gm__ float* x, __gm__ float* y)
{
    int idx = threadIdx.x + blockIdx.x * blockDim.x;
    y[idx] = cbrtf(x[idx]);
}