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Loading LOADSUB ALL FROM "LI.HTS"
or LOADSUB FROM "MATHLIB.HTS"
Usage REAL X,Y
Y=FNLi(X)
Description
FNLi returns the value of the log integral of x, Li(x). Li(x) is defined by the relation
The path of integration must not include the points x = 0 and x = 1 and must not cross the real axis.
The real version of Li(x) is only defined for x positive or zero.
Errors
FNLi causes an HTBasic error if its argument is not of type REAL or if it is negative.
Li(x)
See Also Ci, Ei, Si
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