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math_fun_special.py

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# 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))