Re: [RFC] [Discussion] Rounding Integers as int

On Tue, 26 Sep 2023, Larry Garfield wrote: > ceil and floor should > always return ints, unconditionally, because that's literally what > their purpose is. But that RFC doesn't say that, which makes me quite > confused. They can't do that. ceil(2.4e102) can't be repesented as an integer. > Similarly, the BC shim would therefore be (float)ceil($x), not > ceil((float)$x), which... I don't think that would even do anything, > would it? (float) $int *could* also do something: $ php -dprecision=20 -r 'echo (float) 1152921504606846974;' 1152921504606846976 $ php -dprecision=20 -r 'var_dump(ceil((float) 1152921504606846974));' double(1152921504606846976) (see how the 74 changes into 76 at the end). Integers in the ranges LONG_MAX to 2^53, and -2^53 to LONG_MIN can't be represented as whole numbers as float, and some precision is lost. cheers, Derick