3.221. __nv_log1p

Prototype: 

double @__nv_log1p(double %x)

Description:

Calculate the value of l o g e ( 1 + x ) of the input argument x.

Returns:

  • __nv_log1p( ± 0 ) returns − ∞ .

  • __nv_log1p(-1) returns +0.

  • __nv_log1p(x) returns NaN for x < -1.

  • __nv_log1p( + ∞ ) returns + ∞ .

Note:

For accuracy information see the CUDA C++ Programming Guide, Mathematical Functions Appendix, Double-Precision Floating-Point Functions section.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes