[issue23229] add inf, nan, infj, nanj to cmath module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

There are other names which exist only in math, but not in cmath.

>>> sorted(set(dir(math)) - set(dir(cmath)))
['atan2', 'ceil', 'copysign', 'degrees', 'erf', 'erfc', 'expm1', 'fabs', 'factorial', 'floor', 'fmod', 'frexp', 'fsum', 'gamma', 'hypot', 'inf', 'ldexp', 'lgamma', 'log1p', 'log2', 'modf', 'nan', 'pow', 'radians', 'trunc']

May be complex equivalents of all functions should be added for the same reasons?

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23229>
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