besselI

double
besselI
(
double x
,
double alpha
,
Flag!"ExponentiallyScaled" expFlag = Flag!"ExponentiallyScaled".no
)

Examples

1 assert(std.math.approxEqual(besselI(2, 1),
2 	1.590636854637329063382254424999666));
3 assert(std.math.approxEqual(besselI(20, 1),
4 	4.245497338512777018140990665e+7));
5 assert(std.math.approxEqual(besselI(1, 1.2), 0.441739));

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