def erf(self, o, fp): f, = o.ufl_operands return fp * (2.0 / sqrt(pi) * exp(-f**2))
def erf(self, o, a): f, fp = a o = self.reuse_if_possible(o, f) op = fp*(2.0/sqrt(pi)*exp(-f**2)) return (o, op)
def erf(self, f): "d/dx erf x = 2/sqrt(pi)*exp(-x^2)" x, = f.operands() return (2.0/sqrt(pi)*exp(-x**2),)
def Kinetic_oxy(Temperature): """Kinetic constant - mathematical expression""" k_oxy = exp(alfa) * exp(-beta / Temperature) return k_oxy
def erf(self, o, a): f, fp = a o = self.reuse_if_possible(o, f) op = fp * (2.0 / sqrt(pi) * exp(-f**2)) return (o, op)
def Kinetic_oxy(Temperature): """mathematical expression of kinetic temperature-dependent constant""" k_oxy = exp(alfa) * exp(-beta / Temperature) return k_oxy