besselK

double besselK(double x, double alpha, Flag!"ExponentiallyScaled" expFlag)
double
besselK
(
double x
,
double alpha
,
Flag!"ExponentiallyScaled" expFlag = Flag!"ExponentiallyScaled".no
)
double besselK(double x, double alpha, Flag!"ExponentiallyScaled" expFlag, double[] b)
void besselK(double x, double alpha, Flag!"ExponentiallyScaled" expFlag, double[] b, ptrdiff_t ncalc)

Examples

assert(std.math.approxEqual(besselK(2, 1), 0.139865881816522427284));
assert(std.math.approxEqual(besselK(20, 1), 5.88305796955703817765028e-10));
assert(std.math.approxEqual(besselK(1, 1.2), 0.701080));

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Source

See Implementation

bessel functions