3.32. __nv_cospif

Prototype: 

float @__nv_cospif(float %x)

Description:

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

Returns:

  • __nv_cospif( ± 0 ) returns 1.

  • __nv_cospif( ± ∞ ) returns NaN.

Note:

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