Python ldexp Examples

Example #1

File: test_umath.py Project: Fematich/article_browser

 def _check_ldexp(self, tp):
     assert_almost_equal(ncu.ldexp(np.array(2., np.float32),
                                   np.array(3, tp)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float64),
                                   np.array(3, tp)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.longdouble),
                                   np.array(3, tp)), 16.)

Example #2

File: test_umath.py Project: Fematich/article_browser

 def test_ldexp_overflow(self):
     # silence warning emitted on overflow
     with np.errstate(over="ignore"):
         imax = np.iinfo(np.dtype('l')).max
         imin = np.iinfo(np.dtype('l')).min
         assert_equal(ncu.ldexp(2., imax), np.inf)
         assert_equal(ncu.ldexp(2., imin), 0)

Example #3

File: test_umath.py Project: darlinghq/darling-python_modules

 def _check_ldexp(self, tp):
     assert_almost_equal(
         ncu.ldexp(np.array(2., np.float32), np.array(3, tp)), 16.)
     assert_almost_equal(
         ncu.ldexp(np.array(2., np.float64), np.array(3, tp)), 16.)
     assert_almost_equal(
         ncu.ldexp(np.array(2., np.longdouble), np.array(3, tp)), 16.)

Example #4

File: test_umath.py Project: darlinghq/darling-python_modules

 def test_ldexp_overflow(self):
     # silence warning emitted on overflow
     with np.errstate(over="ignore"):
         imax = np.iinfo(np.dtype('l')).max
         imin = np.iinfo(np.dtype('l')).min
         assert_equal(ncu.ldexp(2., imax), np.inf)
         assert_equal(ncu.ldexp(2., imin), 0)

Example #5

File: test_umath.py Project: jarrodmillman/numpy

 def test_ldexp_overflow(self):
     # silence warning emitted on overflow
     err = np.seterr(over="ignore")
     try:
         imax = np.iinfo(np.dtype("l")).max
         imin = np.iinfo(np.dtype("l")).min
         assert_equal(ncu.ldexp(2.0, imax), np.inf)
         assert_equal(ncu.ldexp(2.0, imin), 0)
     finally:
         np.seterr(**err)

Example #6

 def test_ldexp_overflow(self):
     # silence warning emitted on overflow
     err = np.seterr(over="ignore")
     try:
         imax = np.iinfo(np.dtype('l')).max
         imin = np.iinfo(np.dtype('l')).min
         assert_equal(ncu.ldexp(2., imax), np.inf)
         assert_equal(ncu.ldexp(2., imin), 0)
     finally:
         np.seterr(**err)

Example #7

File: test_umath.py Project: jarrodmillman/numpy

 def test_ldexp(self):
     # The default Python int type should work
     assert_almost_equal(ncu.ldexp(2.0, 3), 16.0)
     # The following int types should all be accepted
     self._check_ldexp(np.int8)
     self._check_ldexp(np.int16)
     self._check_ldexp(np.int32)
     self._check_ldexp("i")
     self._check_ldexp("l")

Example #8

File: test_umath.py Project: darlinghq/darling-python_modules

 def test_ldexp(self):
     # The default Python int type should work
     assert_almost_equal(ncu.ldexp(2., 3), 16.)
     # The following int types should all be accepted
     self._check_ldexp(np.int8)
     self._check_ldexp(np.int16)
     self._check_ldexp(np.int32)
     self._check_ldexp('i')
     self._check_ldexp('l')

Example #9

File: test_umath.py Project: dagss/numpy_svn

 def test_ldexp(self):
     assert_almost_equal(ncu.ldexp(2., 3),  16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float32), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float32), np.array(3, np.int32)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float64), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float64), np.array(3, np.int32)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.longdouble), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.longdouble), np.array(3, np.int32)), 16.)

Example #10

 def test_ldexp(self):
     assert_almost_equal(ncu.ldexp(2., 3),  16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float32), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float32), np.array(3, np.int32)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float64), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.float64), np.array(3, np.int32)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.longdouble), np.array(3, np.int16)), 16.)
     assert_almost_equal(ncu.ldexp(np.array(2., np.longdouble), np.array(3, np.int32)), 16.)

Example #11

File: test_umath.py Project: eteq/numpy

 def test_ldexp_overflow(self):
     imax = np.iinfo(np.dtype('l')).max
     imin = np.iinfo(np.dtype('l')).min
     assert_equal(ncu.ldexp(2., imax), np.inf)
     assert_equal(ncu.ldexp(2., imin), 0)