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Showing content from https://timsong-cpp.github.io/cppwp/n4659/sf.cmath.sph_bessel below:

[sf.cmath.sph_bessel]

29 Numerics library [numerics] 29.9 Mathematical functions for floating-point types [c.math] 29.9.5 Mathematical special functions [sf.cmath] 29.9.5.19 Spherical Bessel functions of the first kind [sf.cmath.sph_bessel]

double sph_bessel(unsigned n, double x); float sph_besself(unsigned n, float x); long double sph_bessell(unsigned n, long double x);

Effects: These functions compute the spherical Bessel functions of the first kind of their respective arguments n and x.

Returns:

jn(x)=(π/2x)1/2Jn+1/2(x),for x0

where n is n and x is x.

Remarks: The effect of calling each of these functions is implementation-defined if n >= 128.


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