def sech(y):
return (2.0 * cosh(y)) / (cosh(2.0 * y) + 1.0)
def sech(y):
return (2.0*cosh(y)) / (cosh(2.0*y) + 1.0)
def sinh(self, o, fp):
f, = o.ufl_operands
return fp * cosh(f)
def sinh(self, o, fp):
f, = o.ufl_operands
return fp * cosh(f)
def sinh(self, o, a):
f, fp = a
o = self.reuse_if_possible(o, f)
op = fp*cosh(f)
return (o, op)
def tanh(self, f):
"d/dx tanh x = (sech(x))^2 = (2 cosh(x) / (cosh(2x) + 1))^2"
x, = f.operands()
return (((2.0*cosh(x))/(cosh(2.0*x) + 1.0))**2,)
def sinh(self, f):
"d/dx sinh x = cosh(x)"
x, = f.operands()
return (cosh(x),)
def sinh(self, o, a):
f, fp = a
o = self.reuse_if_possible(o, f)
op = fp * cosh(f)
return (o, op)