[GR-23281] Implementation of cmath module

PullRequest: graalpython/1018

Author: otethal

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_cmath.txt

@@ -0,0 +1,32 @@
+*graalpython.lib-python.3.test.test_cmath.CMathTests.testAtanSign
+*graalpython.lib-python.3.test.test_cmath.CMathTests.testAtanhSign
+*graalpython.lib-python.3.test.test_cmath.CMathTests.testTanhSign
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_abs
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_abs_overflows
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_cmath_matches_math
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_constants
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_infinity_and_nan_constants
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_input_type
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_isfinite
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_isinf
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_isnan
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_phase
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_polar
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_polar_errno
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_rect
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_specific_values
+*graalpython.lib-python.3.test.test_cmath.CMathTests.test_user_object
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_asymmetry
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_complex_near_zero
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_complex_values
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_decimals
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_eight_decimal_places
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_fractions
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_identical
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_identical_infinite
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_inf_ninf_nan
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_integers
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_near_zero
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_negative_tolerances
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_reject_complex_tolerances
+*graalpython.lib-python.3.test.test_cmath.IsCloseTests.test_zero_tolerance