static public double pmt(double r, int nper, double pv, double fv) {return pmt(r, nper, pv, fv, 0);}

static public double pmt ( double r , int nper , double pv , double fv ) { return pmt ( r , nper , pv , fv , 0 ) ; }
static public double PMT(double r, int nper, double pv, double fv){return PMT(r, nper, pv, fv, 0);}
