[Bug manual/31518] New: documentation: FLT_MAX_10_EXP questionable text, evtl. wrong,

[Bug manual/31518] New: documentation: FLT_MAX_10_EXP questionable text, evtl. wrong,

[newbie-02 at gmx dot de]

https://sourceware.org/bugzilla/show_bug.cgi?id=31518

            Bug ID: 31518
           Summary: documentation: FLT_MAX_10_EXP questionable text, evtl.
                    wrong,
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: manual
          Assignee: unassigned at sourceware dot org
          Reporter: newbie-02 at gmx dot de
                CC: mtk.manpages at gmail dot com
  Target Milestone: ---

'FLT_MAX_10_EXP
This is the maximum positive integer such that 10 raised to **this power minus
1** can be represented as a normalized floating point number of type float.
This is supposed to be at least 37.' in 
https://www.gnu.org/software/libc/manual/html_node/Floating-Point-Parameters.html
.  

A.) should that read as '10^( FLT_MAX_10_EXP ) - 1' or as '10^( FLT_MAX_10_EXP
- 1 )?  
B.) for DBL_MAX_EXP my system returns 1024, while only 2^1023 fits into a
binary64, 
for DBL_MAX_10_EXP it returns 308, where 1E308 is! possible. 
C.) for XXX_MAX_10_EXP I see similar definition, but different behavior /
relation between description and value returned. 

I see some consistency problems, confusions between the two, the manual and the
values returned.

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