New issue 2563: Slow round() https://bitbucket.org/pypy/pypy/issues/2563/slow-round
Tuom Larsen:
Built-in function `round` seems to be missing fast JIT path:
from timeit import timeit
print timeit('int(sqrt(123.456)+0.5)', 'from math import sqrt')
print timeit('int(round(sqrt(123.456)))', 'from math import sqrt')
prints:
0.00339508056641
1.18832707405
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