Hello,
I have discovered a strange bug with numexpr. numexpr.evaluate gives
randomized results on arrays larger than 2047 elements. The following
program demonstrates this:
from numpy import *
from numexpr import evaluate
def func(x):
return evaluate("sum(x, axis = 0)")
x = zeros(2048)+.01
print evaluate("sum(x, axis = 0)")
print evaluate("sum(x, axis = 0)")
For me this prints different results each time, for example:
11.67
14.84
If we set the size to 2047 I get consistent results.
20.47
20.47
Interestingly, if I do not add .01 to x, it consistently sums to 0.
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