| | |
| |
|
| | from pocketsphinx import LogMath |
| | import unittest |
| |
|
| |
|
| | class TestLogMath(unittest.TestCase): |
| | def assertLogEqual(self, a, b): |
| | self.assertTrue(abs(a - b) < 200) |
| |
|
| | def test_logmath(self): |
| | lmath = LogMath() |
| | self.assertTrue(lmath is not None) |
| | self.assertLogEqual(lmath.log(1e-150), -3454050) |
| | self.assertAlmostEqual(lmath.exp(lmath.log(1e-150)), 1e-150) |
| | self.assertAlmostEqual(lmath.exp(lmath.log(1e-48)), 1e-48) |
| | self.assertLogEqual(lmath.log(42), 37378) |
| | self.assertAlmostEqual(lmath.exp(lmath.log(42)), 42, 1) |
| | print( |
| | "log(1e-3 + 5e-3) = %d + %d = %d\n" |
| | % ( |
| | lmath.log(1e-3), |
| | lmath.log(5e-3), |
| | lmath.add(lmath.log(1e-3), lmath.log(5e-3)), |
| | ) |
| | ) |
| | print( |
| | "log(1e-3 + 5e-3) = %e + %e = %e\n" |
| | % ( |
| | lmath.exp(lmath.log(1e-3)), |
| | lmath.exp(lmath.log(5e-3)), |
| | lmath.exp(lmath.add(lmath.log(1e-3), lmath.log(5e-3))), |
| | ) |
| | ) |
| | self.assertLogEqual( |
| | lmath.add(lmath.log(1e-48), lmath.log(5e-48)), lmath.log(6e-48) |
| | ) |
| | self.assertLogEqual(lmath.add(lmath.log(1e-48), lmath.log(42)), lmath.log(42)) |
| |
|
| |
|
| | if __name__ == "__main__": |
| | unittest.main() |
| |
|
