Function: mfval
Section: modular_forms
C-Name: mfval
Prototype: lG
Help: mfval(F): Valuation of the power series corresponding to the
 form F.
Doc: Valuation of the power series corresponding to the
 form $F$.
 \bprog
 ? D=mfDelta();mfval(D)
 %1 = 1
 ? E4=mfEk(4);mfval(E4)
 %2 = 0
 ? E4S=mfshift(E4,-2);mfval(E4S)
 %3 = 2
 @eprog
