ʽſǶ        [ + - * / ^ ],^Ǵη
  cos(D)  = Dֵ,DԶΪλ  sin(D)   = Dֵ,DԶΪλ
  tan(D)  = Dֵ,DԶΪλ  arctan(B)= BķнǶ,ǶԶΪλ
  abs(B)  = Bľֵ              exp(B)   = Bָ
  ln(B)   = BȻ            sqr(B)   = Bƽ
  sqrt(B) = BĿ                int(B)   = Сλȡ
  round(B)= ȡ           jw(B)    = Сλȡ
  qfs(B)  = ȡBĸ              qzs(B)   = ȡB
--------------------------------------------------------------------------
sin(67910001)
int(sin(67910001)*2010)
60.85+158.03+8.42+157.03+123.64
60.85+158.03+8.42+28.06
0.1/308.83
426.72+723.91+568.09
174.38*31
