pythongh-108303: Move all math files to Lib/test/mathdata/ (python#109512)

(cherry picked from commit ed587be)

Author: sobolevn

Lib/test/cmath_testcases.txt renamed to Lib/test/mathdata/cmath_testcases.txt

@@ -25,7 +25,7 @@
 
 #locate file with float format test values
 test_dir = os.path.dirname(__file__) or os.curdir
-format_testfile = os.path.join(test_dir, 'formatfloat_testcases.txt')
+format_testfile = os.path.join(test_dir, 'mathdata', 'formatfloat_testcases.txt')
 
 class FloatSubclass(float):
     pass
@@ -763,6 +763,7 @@ def test_issue35560(self):
 class ReprTestCase(unittest.TestCase):
     def test_repr(self):
         with open(os.path.join(os.path.split(__file__)[0],
+                  'mathdata',
                   'floating_points.txt'), encoding="utf-8") as floats_file:
             for line in floats_file:
                 line = line.strip()

Lib/test/floating_points.txt renamed to Lib/test/mathdata/floating_points.txt

@@ -33,8 +33,8 @@
 else:
     file = __file__
 test_dir = os.path.dirname(file) or os.curdir
-math_testcases = os.path.join(test_dir, 'math_testcases.txt')
-test_file = os.path.join(test_dir, 'cmath_testcases.txt')
+math_testcases = os.path.join(test_dir, 'mathdata', 'math_testcases.txt')
+test_file = os.path.join(test_dir, 'mathdata', 'cmath_testcases.txt')
 
 
 def to_ulps(x):
@@ -2518,7 +2518,7 @@ def test_fractions(self):
 
 def load_tests(loader, tests, pattern):
     from doctest import DocFileSuite
-    tests.addTest(DocFileSuite("ieee754.txt"))
+    tests.addTest(DocFileSuite(os.path.join("mathdata", "ieee754.txt")))
     return tests
 
 if __name__ == '__main__':

Lib/test/formatfloat_testcases.txt renamed to Lib/test/mathdata/formatfloat_testcases.txt

@@ -2126,6 +2126,7 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/imghdrdata \
 		test/leakers \
 		test/libregrtest \
+		test/mathdata \
 		test/sndhdrdata \
 		test/subprocessdata \
 		test/support \