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py/objfloat: Support raising a negative number to a fractional power.

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This returns a complex number, following CPython behaviour.  For ports that
don't have complex numbers enabled this will raise a ValueError which gives
a fail-safe for scripts that were written assuming complex numbers exist.
This commit is contained in:
Damien George
2017-09-26 12:57:51 +10:00
parent 62849b7010
commit bdc6e86e07
2 changed files with 11 additions and 0 deletions
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4
tests/float/complex1.py
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@@ -53,6 +53,10 @@ print(type(hash(1j)))
# float on lhs should delegate to complex
print(1.2 + 3j)
# negative base and fractional power should create a complex
ans = (-1) ** 2.3; print("%.5g %.5g" % (ans.real, ans.imag))
ans = (-1.2) ** -3.4; print("%.5g %.5g" % (ans.real, ans.imag))
# check printing of inf/nan
print(float('nan') * 1j)
print(float('inf') * (1 + 1j))