Re: [Reduce-algebra-developers] question on log and ln in reduce

[Rainer S. <rai...@gm...>]

On Tue, 9 Jan 2024 at 09:05 -0000, Arthur Norman wrote:

 > redcsl -w
 > Reduce (CSL, rev 6680),  5-Jan-2024 ...
 >
 > 1: plist 'ln;
 >
 > ((simpfn . simpiden) (lose . t) (fancy!-special!-symbol . "\ln") (!:rd!: .
 > rdlog!*))
 >
 > 2: plist 'log;
 >
 > ((full . t) (number!-of!-args . 1) (klist ((log (quotient !~x !~y)) nil)
 > ((log
 > !=a) nil) ((log !=b) nil) ((log !=d) nil)) (simpfn . simplog) (lose . t) (
 > fancy!-functionsymbol . "\log") (solvefn . solvelog) (!:rd!: . rdlog!*) (dfn
 > ((
 > !~x) quotient 1 !~x)) (!:cr!: . crlog!*) (cmpxsplitfn . reimlog)
 > (condrealvalued
 > . log!-realvalued))

ln is very limited: it doesn't work for complex numbers, there is no
simplification for ln(e), etc.

Either define it as synonym for log, or drop it.

 Rainer