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__device__ double acos |
( |
double |
x |
) |
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Calculate the principal value of the arc cosine of the input argument x .
- Returns:
- Result will be in the interval [0,
] for x inside [-1, +1].
- acos(1) returns +0.
- acos(
x ) returns NaN for x outside [-1, +1].
- Note:
- For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2.
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