S_i0

Modified spherical Bessel function of the first kind and order zero.

Loading LOADSUB ALL FROM "BESMS.HTS"

or LOADSUB FROM "MATHLIB.HTS"

Usage REAL X,Y

Y=FNS_i0(X)

Description

FNS_i0 returns the value of the modified spherical Bessel function of the first kind and order zero of x, i0(x). I0(x) is defined for all values of x, but large positive values of x may cause the result to be larger in magnitude than MAXREAL, the largest value representable.

Errors

FNS_i0 causes an HTBasic error if its argument is not of type REAL or if the result would be larger than MAXREAL.

i0(x)

See Also S_i1, S_im0, S_in, S_k0