3.224. __nv_log2f
Prototype:
float @__nv_log2f(float %x)
Description:
Calculate the base 2 logarithm of the input argument x.
Returns:
-
__nv_log2f( ) returns .
-
__nv_log2f(1) returns +0.
-
__nv_log2f(x) returns NaN for x < 0.
-
__nv_log2f( ) returns .
For accuracy information for this function see the CUDA C Programming Guide, Appendix D.1, Table 6.
Library Availability:
Compute 2.0: Yes
Compute 3.0: Yes
Compute 3.5: Yes