Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

Re: Motion 46: finalise interval literals: ULP



On 2013-07-17 16:44:16 +0200, Vincent Lefevre wrote:
> Also, though the IEEE 754-2008 standard doesn't define "ULP", it
> defines:
> 
>   2.1.44 quantum: The quantum of a finite floating-point representation
>   is the value of a unit in the last position of its significand. [...]
>                     ^^^^^^^^^^^^^^^^^^^^^^^^^

But IEEE 754-1985 used "unit in the last place". And the C and LIA-2
standards also uses "unit in the last place". So, this can be seen as
the official term.

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)