3.31. __nv_cospi

Prototype: 

double @__nv_cospi(double %x)

Description:

Calculate the cosine of x × π (measured in radians), where x is the input argument.

Returns:

  • __nv_cospi( ± 0 ) returns 1.

  • __nv_cospi( ± ∞ ) returns NaN.

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