Merge pull request #17276 from jakevdp:finfo-tests

PiperOrigin-RevId: 559878846
google · Aug 24, 2023 · d452eea · d452eea
2 parents a71c0e6 + 71275b5
commit d452eea
Showing 1 changed file with 0 additions and 60 deletions.
diff --git a/tests/dtypes_test.py b/tests/dtypes_test.py
@@ -353,66 +353,6 @@ def testDefaultDtypes(self):
     self.assertEqual(dtypes.float_, np.float32 if precision == '32' else np.float64)
     self.assertEqual(dtypes.complex_, np.complex64 if precision == '32' else np.complex128)
 
-  @parameterized.named_parameters(
-      {"testcase_name": f"_{dtype}", "dtype": dtype}
-      for dtype in float_dtypes)
-  def testFInfo(self, dtype):
-    if _fp8_enabled and dtype in fp8_dtypes:
-      self.skipTest("fp8 types do not yet have `compare` in HLO")
-
-    # Check that finfo attributes are self-consistent & reflect observed behavior.
-    dtype = np.dtype(dtype)
-
-    if dtype == np.float64 and not config.x64_enabled:
-      self.skipTest("x64 not enabled")
-    info = dtypes.finfo(dtype)
-
-    _ = str(info)  # doesn't crash
-
-    def make_val(val):
-      return jnp.array(val, dtype=dtype)
-
-    def assertRepresentable(val):
-      self.assertEqual(make_val(val).item(), val)
-
-    @jtu.ignore_warning(category=RuntimeWarning, message="overflow")
-    def assertInfinite(val):
-      self.assertEqual(make_val(val), make_val(jnp.inf))
-
-    def assertZero(val):
-      self.assertEqual(make_val(val), make_val(0))
-
-    self.assertEqual(jnp.array(0, dtype).dtype, dtype)
-    self.assertIs(info.dtype, dtype)
-
-    self.assertEqual(info.bits, jnp.array(0, dtype).itemsize * 8)
-    self.assertEqual(info.nmant + info.nexp + 1, info.bits)
-
-    assertRepresentable(info.tiny)
-    assertRepresentable(info.max)
-    assertRepresentable(2.0 ** (info.maxexp - 1))
-
-    if dtype != np.float64:  # avoid Python float overflows
-      assertInfinite(info.max * 2)
-      assertInfinite(2. ** info.maxexp)
-
-    # smallest_normal & smallest_subnormal added in numpy 1.22
-    assertRepresentable(info.smallest_subnormal)
-    assertZero(info.smallest_subnormal * 0.5)
-    self.assertEqual(info.tiny, info.smallest_normal)
-
-    # Identities according to the documentation:
-    self.assertAllClose(info.resolution, make_val(10 ** -info.precision))
-    self.assertEqual(info.epsneg, make_val(2 ** info.negep))
-    self.assertEqual(info.eps, make_val(2 ** info.machep))
-    self.assertEqual(info.iexp, info.nexp)
-
-    # Check that minexp is consistent with nmant
-    self.assertEqual(
-        make_val(2 ** info.minexp).view(UINT_DTYPES[info.bits]),
-        2 ** info.nmant,
-    )
-
 
 class TestPromotionTables(jtu.JaxTestCase):