paulmasson/math

Improve `harmonic`

axkr opened this issue · 0 comments

axkr commented

Sorry I somehow missed #18.

Can the formula:
HarmonicNumber(n) == EulerGamma + PolyGamma(0, 1 + n)

be used in harmonic for non-integer arguments?

math/build/math.js

Line 4464 in e8a5603

if ( !Number.isInteger(n) ) throw Error( 'Noninteger index for harmonic number' );

Also for 2 arguments:
HarmonicNumber(n, r) == -HurwitzZeta(r, 1 + n) + Zeta(r)