Commit f0d976d3 authored by Philipp Arras's avatar Philipp Arras
Browse files


parent a73715cb
......@@ -32,29 +32,14 @@ def jt(lin, check):
assert_allclose(_lin2grad(lin), check)
def test_lin():
def test_special_gradients():
dom = ift.UnstructuredDomain((1,))
f = ift.full(dom, 2.4)
var = ift.Linearization.make_var(f)
s = f.local_data
jt(var.exp(), np.exp(s))
jt(var.clip(0, 10), np.ones_like(s))
jt(var.clip(-1, 0), np.zeros_like(s))
jt(var.sqrt(), .5/np.sqrt(s))
jt(var.sin(), np.cos(s))
jt(var.cos(), -np.sin(s))
jt(var.tan(), 1/np.cos(s)**2)
jt(var.sinc(), (np.cos(np.pi*s) - np.sinc(s))/s)
jt(var.log(), 1/s)
jt(var.sinh(), np.cosh(s))
jt(var.cosh(), np.sinh(s))
jt(var.tanh(), 1 - np.tanh(s)**2)
jt(var.absolute(), np.ones_like(s))
jt(var.one_over(), -1/s**2)
sigmoid = 0.5*(1 + var.tanh())
jt(var.sigmoid(), sigmoid.jac(ift.full(sigmoid.domain, 1.)).local_data)
_lin2grad(ift.Linearization.make_var(0*f).sinc()), np.zeros(s.shape))
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