motion accuracy
p1788
although Bill Walster's statement "Functions have to be valid,
everything else is a matter of QoI" is appealing , I think that p1788
shall not be worse than 754 concerning accuracy.
Therefore I submit te following motion:
Table 1 in chapter 2 lists the forward mode elementary functions.
1. move the square function sqr(x) behind the function recip
2. Now the table consists out of 6 parts mhich here will be called
- the basic operations
- the case fct
- power fcts
- trig/hyp fcts
- integer fcts
- absmax fcts
3. the basic operations are provided as internal type fcts and as mixed
type formatOf fcts
4. the basic operations, the case fct, integer fcts as well as absmax
fcts shall be "tightest"
5. the other functions of table 1, the recommended fcts of tables 6 and
table 7 as well as all reverse mode fcts shall be "valid" and should
be "accurate"
Jürgen
--
o Prof. Dr. Juergen Wolff von Gudenberg, Lehrstuhl fuer
Informatik II
/ \ Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg
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o o Wuerzburg