try:

from cmath import *

except ImportError:

print("SKIP")

import sys

sys.exit()

print("%.5g" % e)

print("%.5g" % pi)

test_values_non_zero = []

base_values = (0.0, 0.5, 1.23456, 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))

test_values = [complex(0., 0.),] + test_values_non_zero

print(test_values)

functions = [

('phase', phase, test_values),

('polar', polar, test_values),

('rect', rect, ((0, 0), (0, 1), (0, -1), (1, 0), (-1, 0), (1, 1), (-1, 1), (1, -1), (123., -456.))),

('exp', exp, test_values),

('log', log, test_values_non_zero),

('log10', log10, test_values_non_zero),

('sqrt', sqrt, test_values),

('cos', cos, test_values),

('sin', sin, test_values),

]

for f_name, f, test_vals in functions:

print(f_name)

for val in test_vals:

if type(val) == tuple:

ret = f(*val)

else:

ret = f(val)

if type(ret) == float:

print("%.5g" % ret)

elif type(ret) == tuple:

print("%.5g %.5g" % ret)

else:

# some test (eg cmath.sqrt(-0.5)) disagree with CPython with tiny real part

real = ret.real

if abs(real) < 1e15:

real = 0.

print("complex(%.5g, %.5g)" % (real, ret.imag))