Re: Accuracy of Mathematical Functions

[Paul Zimmermann <Paul.Zimmermann@inria.fr>]

       Dear Joseph,

> > we have updated our comparison:
> > 
> > https://members.loria.fr/PZimmermann/papers/accuracy.pdf
> > 
> > This update is for GNU libc 2.40:
> > 
> > * it includes the new functions exp10m1, exp2m1, log10p1, log2p1
> >   added in 2.40 (for all formats)
> 
> The table for single precision only has exp10m1, not the other three 
> functions.

sorry, I have fixed that in a new version (same link).

> Also, the tables with inputs giving largest known errors don't seem 
> consistent about whether they include functions not implemented in the 
> relevant libm implementations.  For example, "Table 14: Double extended 
> precision: OpenLibm and Musl." has empty lines for j0, j1, y0 and y1, but 
> various such tables do not have blank lines for the four C23 functions 
> newly added to glibc.  My expectation would be that either all the tables 
> include all the functions (even when the corresponding lines are blank), 
> or the blank lines for unimplemented functions are consistently omitted 
> across all the tables.

good catch. I have removed empty lines.

Paul