[Gretl-devel] Re: Why?

On Mon, 28 Feb 2022, Marcin Błażejowski wrote: > Hi, > > why below script works fine for integers \in [2,53] and does not work > for interegers >= 54? That's because in a 64-bit floating-point value 11 bits are reserved for the exponent, leaving only 53 for the mantissa. Integers up to 2^53 can be exactly represented as doubles, larger integers cannot be exactly represented.