# test the special functions imported from math

try:
 from math import *
 erf
except (ImportError, NameError):
 print("SKIP")
 raise SystemExit

test_values = [-8., -2.5, -1, -0.5, 0.0, 0.5, 2.5, 8.,]
pos_test_values = [0.001, 0.1, 0.5, 1.0, 1.5, 10.,]

functions = [
 ('expm1', expm1, test_values),
 ('log2', log2, test_values),
 ('log10', log10, test_values),
 ('cosh', cosh, test_values),
 ('sinh', sinh, test_values),
 ('tanh', tanh, test_values),
 ('acosh', acosh, [1.0, 5.0, 1.0]),
 ('asinh', asinh, test_values),
 ('atanh', atanh, [-0.99, -0.5, 0.0, 0.5, 0.99]),
 ('erf', erf, test_values),
 ('erfc', erfc, test_values),
 ('gamma', gamma, pos_test_values),
 ('lgamma', lgamma, pos_test_values + [50., 100.,]),
]

for function_name, function, test_vals in functions:
 print(function_name)
 for value in test_vals:
 try:
 print("{:.4g}".format(function(value)))
 except ValueError as e:
 print(str(e))