Modified spherical Bessel function of the third kind and order zero.
Loading LOADSUB ALL FROM "BESMS.HTS"
or LOADSUB S_k0 FROM "MATHLIB.HTS"
Usage REAL X,Y
Y=FNS_k0(X)
Description
FNS_k0returns the value of the modified spherical Bessel function of the third kind and order zero ofx,k0(x).K0(x) is defined for all values ofxexcept zero, but large negative values ofxor values ofxnear zero may cause the result to be larger in magnitude than MAXREAL, the largest value representable.
Errors
FNS_k0causes an HTBasic error if its argument is not of type REAL, ifxis zero, or if the result would be larger than MAXREAL.