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A comment on There Are Only Four Billion Floats, So Test Them All (2014).

Re:There Are Only Four Billion Floats, So Test Them All (2014) by marian0_ on Thursday September 14, 2017 @07:24PM (#15253321)
Funny he complains so much about incorrect rounding without doing any research: that's called bankers' rounding.

http://wiki.c2.com/?BankersRounding

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Re:There Are Only Four Billion Floats, So Test Them All (2014) by int_19h on Thursday September 14, 2017 @07:39PM (#15253404)
The functions called "ceil" and "floor" shouldn't do banker's rounding - the very names describe what the behavior is supposed to be.
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Re:There Are Only Four Billion Floats, So Test Them All (2014) by FabHK on Thursday September 14, 2017 @07:59PM (#15253490)
The author is not complaining about the default rounding rule for floats in IEEE 754 (a very thoughtful standard, principally designed by William Kahan, who has several articles/rants about it on his homepage).

The author is complaining about this particular (bad) implementation of ceil and related functions giving incorrect results (some due to said rounding rule).

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