func ptr2poly(cpoly unsafe.Pointer) Poly {
count := int(C.lenPoly(cpoly))
poly := make([]Gd, count)
for i := 0; i < count; i++ {
m := C.getPoly(cpoly, C.int(i))
poly[i] = Gd{
int(C.getG(m)),
int(C.getD(m)),
}
}
return Poly(poly)
}
func ptr2gd(cgd unsafe.Pointer) Gd {
return Gd{
int(C.getG(cgd)),
int(C.getD(cgd)),
}
}