Thread (7 messages) flat view 7 messages, 5 authors, 2021-02-14

Re: expm1(3p): Mathematical error in given example

From: Jakub Wilk <hidden>
Date: 2021-02-12 09:42:15

* Alejandro Colomar [off-list ref], 2021-02-11, 16:49:
quoted
In the APPLICATION USAGE section of expm1(3p)[1] the given example is wrong:

===8<=== Snip =========================================

[..] calculations of ((1+x)n-1)/x, namely:

          expm1(n * log1p(x))/x

======== Snap ====================================>8===

Actually, both expressions are not equal, rather

expm1(n * log1p(x))/x = ((1+x)**n - 1)/x

(with a fictional ** as power infix-operator) would be.
[...]
We don't maintain the source of the POSIX manual pages.  You could file 
a bug to the Austin Group.
As Walter noted in another mail, the POSIX sources are correct.

This is a problem with conversion to the man page format, which should 
be reported here, not to the Austin Group.

-- 
Jakub Wilk
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