Find logarithm in cuda

问题

How do I find logarithm in cuda? I'm looking for a device function.

Thanks

回答1:

You can use:

logf(x)
__logf(x)
log2f(x)
__log2f(x)
log10f(x)
__log10f(x)

Taken from the CUDA Programming Guide (Appendix D).

回答2:

As Ade says log* functions. Keep in mind that __log* might be fast but not accurate.

来源：https://stackoverflow.com/questions/5355557/find-logarithm-in-cuda