Calculate the nonnegative arc hyperbolic cosine of the input argument x
(measured in radians).
- Returns:
- Result will be in the interval [0,
].
- acosh(1) returns 0.
- acosh(
x
) returns NaN for x
in the interval [
, 1).
- Note:
- For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2.