TST: disable longdouble string/print tests on Linux aarch64

See gh-23974

numpy/core/tests/test_arrayprint.py

@@ -1,3 +1,4 @@
+import platform
 import sys
 import gc
 from hypothesis import given
@@ -164,7 +165,10 @@ class TestComplexArray:
     def test_str(self):
         rvals = [0, 1, -1, np.inf, -np.inf, np.nan]
         cvals = [complex(rp, ip) for rp in rvals for ip in rvals]
-        dtypes = [np.complex64, np.cdouble, np.clongdouble]
+        if platform.machine() == 'aarch64':  # see gh-23974
+            dtypes = [np.complex64, np.cdouble]
+        else:
+            dtypes = [np.complex64, np.cdouble, np.clongdouble]
         actual = [str(np.array([c], dt)) for c in cvals for dt in dtypes]
         wanted = [
             '[0.+0.j]',    '[0.+0.j]',    '[0.+0.j]',

numpy/core/tests/test_print.py

@@ -1,4 +1,5 @@
 import sys
+import platform
 
 import pytest
 
@@ -12,7 +13,14 @@
 _REF = {np.inf: 'inf', -np.inf: '-inf', np.nan: 'nan'}
 
 
-@pytest.mark.parametrize('tp', [np.float32, np.double, np.longdouble])
+# longdouble printing issue on aarch64, see gh-23974
+if platform.machine() == 'aarch64':
+    _real_dtypes = [np.float32, np.double]
+    _complex_dtypes = [np.complex64, np.cdouble]
+else:
+    _real_dtypes = [np.float32, np.double, np.longdouble]
+    _complex_dtypes = [np.complex64, np.cdouble, np.clongdouble]
+@pytest.mark.parametrize('tp', _real_dtypes)
 def test_float_types(tp):
     """ Check formatting.
 
@@ -34,7 +42,7 @@ def test_float_types(tp):
                      err_msg='Failed str formatting for type %s' % tp)
 
 
-@pytest.mark.parametrize('tp', [np.float32, np.double, np.longdouble])
+@pytest.mark.parametrize('tp', _real_dtypes)
 def test_nan_inf_float(tp):
     """ Check formatting of nan & inf.
 
@@ -48,7 +56,7 @@ def test_nan_inf_float(tp):
                      err_msg='Failed str formatting for type %s' % tp)
 
 
-@pytest.mark.parametrize('tp', [np.complex64, np.cdouble, np.clongdouble])
+@pytest.mark.parametrize('tp', _complex_dtypes)
 def test_complex_types(tp):
     """Check formatting of complex types.
 
@@ -74,7 +82,7 @@ def test_complex_types(tp):
                      err_msg='Failed str formatting for type %s' % tp)
 
 
-@pytest.mark.parametrize('dtype', [np.complex64, np.cdouble, np.clongdouble])
+@pytest.mark.parametrize('dtype', _complex_dtypes)
 def test_complex_inf_nan(dtype):
     """Check inf/nan formatting of complex types."""
     TESTS = {
@@ -119,7 +127,7 @@ def _test_redirected_print(x, tp, ref=None):
                  err_msg='print failed for type%s' % tp)
 
 
-@pytest.mark.parametrize('tp', [np.float32, np.double, np.longdouble])
+@pytest.mark.parametrize('tp', _real_dtypes)
 def test_float_type_print(tp):
     """Check formatting when using print """
     for x in [0, 1, -1, 1e20]:
@@ -135,7 +143,7 @@ def test_float_type_print(tp):
         _test_redirected_print(float(1e16), tp, ref)
 
 
-@pytest.mark.parametrize('tp', [np.complex64, np.cdouble, np.clongdouble])
+@pytest.mark.parametrize('tp', _complex_dtypes)
 def test_complex_type_print(tp):
     """Check formatting when using print """
     # We do not create complex with inf/nan directly because the feature is

numpy/core/tests/test_scalarprint.py

@@ -13,7 +13,11 @@
 class TestRealScalars:
     def test_str(self):
         svals = [0.0, -0.0, 1, -1, np.inf, -np.inf, np.nan]
-        styps = [np.float16, np.float32, np.float64, np.longdouble]
+        # longdouble printing issue on aarch64, see gh-23974
+        if platform.machine() == 'aarch64':
+            styps = [np.float16, np.float32, np.float64]
+        else:
+            styps = [np.float16, np.float32, np.float64, np.longdouble]
         wanted = [
              ['0.0',  '0.0',  '0.0',  '0.0' ],
              ['-0.0', '-0.0', '-0.0', '-0.0'],
@@ -263,7 +267,9 @@ def test_dragon4(self):
     def test_dragon4_interface(self):
         tps = [np.float16, np.float32, np.float64]
         # test is flaky for musllinux on np.float128
-        if hasattr(np, 'float128') and not IS_MUSL:
+        # also currently failing on Linux aarch64 with Meson (see gh-23974)
+        is_aarch64 = platform.machine() == 'aarch64'
+        if hasattr(np, 'float128') and not IS_MUSL and not is_aarch64:
             tps.append(np.float128)
 
         fpos = np.format_float_positional

numpy/core/tests/test_strings.py

@@ -1,5 +1,6 @@
 import pytest
 
+import platform
 import operator
 import numpy as np
 
@@ -88,6 +89,9 @@ def test_string_comparisons_empty(op, ufunc, sym, dtypes):
 @pytest.mark.parametrize("str_dt", ["S", "U"])
 @pytest.mark.parametrize("float_dt", np.typecodes["AllFloat"])
 def test_float_to_string_cast(str_dt, float_dt):
+    if platform.machine() == 'aarch64' and float_dt == 'g':
+        pytest.xfail("string repr issues with longdouble, see gh-23974")
+
     float_dt = np.dtype(float_dt)
     fi = np.finfo(float_dt)
     arr = np.array([np.nan, np.inf, -np.inf, fi.max, fi.min], dtype=float_dt)