Merge pull request #1310 from joshuacwnewton/jn/1309-filter-numpy-warning-longdouble-wsl

Filter upstream warning raised by `np.finfo(np.longdouble)` on WSL1

Author: effigies

.zenodo.json

@@ -391,6 +391,11 @@
     },
     {
       "name": "freec84"
+    },
+    {
+      "affiliation": "Polytechnique Montréal, Montréal, CA",
+      "name": "Newton, Joshua",
+      "orcid": "0009-0005-6963-3812"
     }
   ],
   "keywords": [

nibabel/casting.py

@@ -274,7 +274,13 @@ def type_info(np_type):
             nexp=None,
             width=width,
         )
-    info = np.finfo(dt)
+    # Mitigate warning from WSL1 when checking `np.longdouble` (#1309)
+    with warnings.catch_warnings():
+        warnings.filterwarnings(
+            action='ignore', category=UserWarning, message='Signature.*numpy.longdouble'
+        )
+        info = np.finfo(dt)
+
     # Trust the standard IEEE types
     nmant, nexp = info.nmant, info.nexp
     ret = dict(