[erlang-questions] math ceil floor

Samuel samuelrivas@REDACTED
Fri Jun 3 23:37:48 CEST 2016

>> I made pull request https://github.com/erlang/otp/pull/1084which
>> implements ceil and floor in the math module.
>> The question is, should they return integer or floats?
> Yes, they should.  For each of floor, ceiling, round, truncate there are
> two sensible functions: one returns the appropriate integer as an integer,
> and the other returns it as a floating-point number.

What is the use case when you want floor/ceil to return a float and
not an integer in Erlang?

Since Erlang has bignums, which I understand can represent the integer
part of any float,  and those operations are supposed to return an
integer I can't see a reason for a float result (other than, maybe,


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