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Copy pathcmath_fun.py
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56 lines (51 loc) · 1.62 KB
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# test the functions imported from cmath
try:
from cmath import *
except ImportError:
print("SKIP")
import sys
sys.exit()
# make sure these constants exist in cmath
print("%.5g" % e)
print("%.5g" % pi)
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))
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),
('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))