1 files changed, 30 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/numpy/core/tests/test_machar.py b/.venv/lib/python3.12/site-packages/numpy/core/tests/test_machar.py
new file mode 100644
index 00000000..3a66ec51
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/numpy/core/tests/test_machar.py
@@ -0,0 +1,30 @@
+"""
+Test machar. Given recent changes to hardcode type data, we might want to get
+rid of both MachAr and this test at some point.
+
+"""
+from numpy.core._machar import MachAr
+import numpy.core.numerictypes as ntypes
+from numpy import errstate, array
+
+
+class TestMachAr:
+    def _run_machar_highprec(self):
+        # Instantiate MachAr instance with high enough precision to cause
+        # underflow
+        try:
+            hiprec = ntypes.float96
+            MachAr(lambda v: array(v, hiprec))
+        except AttributeError:
+            # Fixme, this needs to raise a 'skip' exception.
+            "Skipping test: no ntypes.float96 available on this platform."
+
+    def test_underlow(self):
+        # Regression test for #759:
+        # instantiating MachAr for dtype = np.float96 raises spurious warning.
+        with errstate(all='raise'):
+            try:
+                self._run_machar_highprec()
+            except FloatingPointError as e:
+                msg = "Caught %s exception, should not have been raised." % e
+                raise AssertionError(msg)