Function: bernpol
Section: transcendental
C-Name: bernpol
Prototype: LDn
Help: bernpol(n, {v = 'x}): Bernoulli polynomial B_n, in variable v.
Doc: \idx{Bernoulli polynomial} $B_n$ in variable $v$.
 \bprog
 ? bernpol(1)
 %1 = x - 1/2
 ? bernpol(3)
 %2 = x^3 - 3/2*x^2 + 1/2*x
 @eprog
