Function: mftraceform
Section: modular_forms
C-Name: mftraceform
Prototype: GD0,L,
Help: mftraceform(NK,{space=0}): If NK=[N,k,CHI,.] as in
 mfinit with k integral, gives the trace form in the corresponding subspace
 of S_k(G_0(N),chi). The supported values for space are 0: the newspace
 (default), 1: the full cuspidal space.
Doc: If $NK=[N,k,CHI,.]$ as in \kbd{mfinit} with $k$ integral, gives the
 trace form in the corresponding subspace of $S_{k}(\Gamma_{0}(N),\chi)$.
 The supported values for \kbd{space} are 0: the newspace (default),
 1: the full cuspidal space.
 \bprog
 ? F = mftraceform([23,2]); mfcoefs(F,16)
 %1 = [0, 2, -1, 0, -1, -2, -5, 2, 0, 4, 6, -6, 5, 6, 4, -10, -3]
 ? F = mftraceform([23,1,-23]); mfcoefs(F,16)
 %2 = [0, 1, -1, -1, 0, 0, 1, 0, 1, 0, 0, 0, 0, -1, 0, 0, -1]
 @eprog
