## 3.107. __nv_fast_powf

Prototype:

```float @__nv_fast_powf(float %x, float %y)

```

Description:

Calculate the fast approximate of x, the first input argument, raised to the power of y, the second input argument, ${x}^{y}$ .

Returns:

Returns an approximation to ${x}^{y}$ .

Note:

For accuracy information for this function see the CUDA C Programming Guide, Appendix D.2, Table 9.

Most input and output values around denormal range are flushed to sign preserving 0.0.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes