tests: Allow float tests to run when MATH_SPECIAL_FUNCTIONS is disabled.

tests/float/cmath_fun_special.py

@@ -0,0 +1,32 @@
+# test the special functions imported from cmath
+
+try:
+    from cmath import *
+    log10
+except (ImportError, NameError):
+    print("SKIP")
+    import sys
+    sys.exit()
+
+test_values_non_zero = []
+base_values = (0.0, 0.5, 1.2345, 10.)
+for r in base_values:
+    for i in base_values:
+        if r != 0. or i != 0.:
+            test_values_non_zero.append(complex(r, i))
+        if r != 0.:
+            test_values_non_zero.append(complex(-r, i))
+        if i != 0.:
+            test_values_non_zero.append(complex(r, -i))
+        if r != 0. and i != 0.:
+            test_values_non_zero.append(complex(-r, -i))
+
+functions = [
+    ('log10', log10, test_values_non_zero),
+]
+
+for f_name, f, test_vals in functions:
+    print(f_name)
+    for val in test_vals:
+        ret = f(val)
+        print("complex(%.5g, %.5g)" % (ret.real, ret.imag))