__device__ double y1 ( double  x  ) 

Calculate the value of the Bessel function of the second kind of order 1 for the input argument x, $Y_1(x)$.

Returns:
Returns the value of the Bessel function of the second kind of order 1.
  • y1(0) returns $-\infty$.
  • y1(x) returns NaN for x < 0.
  • y1($+\infty$) returns +0.
  • y1(NaN) returns NaN.
Note:
For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2.


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