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sim._pyrtl: mask Mux selection operand.

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Otherwise it behaves funny when it's eg. the result of operator ~.
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Marcelina Kościelnicka 2020-11-14 16:22:34 +01:00 • committed by GitHub
parent adef3b2e7b
commit 44318149e0
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2 changed files with 6 additions and 1 deletions
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5
tests/test_sim.py
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@ -186,6 +186,11 @@ class SimulatorUnitTestCase(FHDLTestCase):
self.assertStatement(stmt, [C(2, 4), C(3, 4), C(0)], C(3, 4))
self.assertStatement(stmt, [C(2, 4), C(3, 4), C(1)], C(2, 4))
def test_mux_invert(self):
stmt = lambda y, a, b, c: y.eq(Mux(~c, a, b))
self.assertStatement(stmt, [C(2, 4), C(3, 4), C(0)], C(2, 4))
self.assertStatement(stmt, [C(2, 4), C(3, 4), C(1)], C(3, 4))
def test_abs(self):
stmt = lambda y, a: y.eq(abs(a))
self.assertStatement(stmt, [C(3, unsigned(8))], C(3, unsigned(8)))