3.106. __nv_fast_logf

Prototype: 

float @__nv_fast_logf(float %x)

Description:

Calculate the fast approximate base e logarithm of the input argument x.

Returns:

Returns an approximation to log e ⁡ ( x ) .

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