Description:
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ceil() does not give an correct expected result.
I have read some bug reports before. I understand that there is floating point error, but it happens in just a simple math calculation, which is unacceptable in the below case. It created inaccurate result on simple math, it will also create chaos in more complicated ones.

Reproduce code:
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$n = 100.0*1.1;
print $n.'='.ceil($n);



Expected result:
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110 = 110


Actual result:
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110 = 111