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libdevice User's Guide (PDF) - CUDA Toolkit v5.5 (older) - Last updated May 11, 2013 - Send Feedback

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 C, Table C-4.

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


libdevice User's Guide (PDF) - CUDA Toolkit v5.5 (older) - Last updated May 11, 2013 - Send Feedback