56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# test the functions imported from cmath
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try:
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from cmath import *
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except ImportError:
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print("SKIP")
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raise SystemExit
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# make sure these constants exist in cmath
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print("%.5g" % e)
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print("%.5g" % pi)
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test_values_non_zero = []
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base_values = (0.0, 0.5, 1.2345, 10.)
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for r in base_values:
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for i in base_values:
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if r != 0. or i != 0.:
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test_values_non_zero.append(complex(r, i))
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if r != 0.:
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test_values_non_zero.append(complex(-r, i))
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if i != 0.:
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test_values_non_zero.append(complex(r, -i))
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if r != 0. and i != 0.:
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test_values_non_zero.append(complex(-r, -i))
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test_values = [complex(0., 0.),] + test_values_non_zero
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print(test_values)
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functions = [
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('phase', phase, test_values),
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('polar', polar, test_values),
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('rect', rect, ((0, 0), (0, 1), (0, -1), (1, 0), (-1, 0), (1, 1), (-1, 1), (1, -1), (123., -456.))),
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('exp', exp, test_values),
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('log', log, test_values_non_zero),
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('sqrt', sqrt, test_values),
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('cos', cos, test_values),
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('sin', sin, test_values),
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]
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for f_name, f, test_vals in functions:
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print(f_name)
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for val in test_vals:
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if type(val) == tuple:
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ret = f(*val)
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else:
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ret = f(val)
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if type(ret) == float:
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print("%.5g" % ret)
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elif type(ret) == tuple:
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print("%.5g %.5g" % ret)
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else:
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# some test (eg cmath.sqrt(-0.5)) disagree with CPython with tiny real part
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real = ret.real
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if abs(real) < 1e-6:
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real = 0.
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print("complex(%.5g, %.5g)" % (real, ret.imag))
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