def test_sin():
"""Test of sin method."""
# Test for sin with Rnode objects
x = Rnode(1.0)
z = Elem.sin(x)
z.grad_value = 1.0
try:
assert z.value == np.sin(x.value)
assert x.grad() == np.cos(x.value)
except AssertionError as e:
print(e)
raise AssertionError
# Test for sin with two Dual objects
val1 = Dual(3, [4, 1])
val2 = Dual(2, [3, 1])
val = val1 + val2
z = Elem.sin(val)
try:
assert z.val == np.sin(val.val)
assert z.der[0] == np.cos(val.val) * val.der[0]
assert z.der[1] == np.cos(val.val) * val.der[1]
except AssertionError as e:
print(e)
raise AssertionError
# Test for sin with int
x = 3
fx = Elem.sin(x)
try:
assert fx == np.sin(x)
except AssertionError as e:
print(e)
raise AssertionError
import farad as fd import farad.elem as el import farad.driver as ad f = lambda x: el.exp(x) * el.sin(x**2) function = ad.AutoDiff(f) print(function.forward(1))
def f(x):
return Elem.sin(x)
def f2d3(x):
return Elem.sin(x)
def fi(x):
return el.sin(x) - x