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[Bug libstdc++/11706] std::pow(T, int) implementation pessimizes code


From: gdr at integrable-solutions dot net
Subject: [Bug libstdc++/11706] std::pow(T, int) implementation pessimizes code
Date: 10 Mar 2004 20:43:45 -0000

------- Additional Comments From gdr at integrable-solutions dot net  
2004-03-10 20:43 -------
Subject: Re:  std::pow(T, int) implementation pessimizes code

"pcarlini at suse dot de" <address@hidden> writes:

| ------- Additional Comments From pcarlini at suse dot de  2004-03-10 20:26 
-------
| Subject: Re:  std::pow(T, int) implementation pessimizes
|  code
| 
| gdr at integrable-solutions dot net wrote:
| 
| >Did you get the report that ::pow() is no longer inlined?
| >  
| >
| Why, now you are discussing ::pow, if in your comment #6 and #8 you
| emphasized that we should not use ::pow?

I'm discussing ::pow() because that is what the reporter wanted V3 to
use. I emphasize against those, and I would strongly advise against
any patch that does that.  Which is why I'm telling you that upfront
before you waste your time in that direction.
The only fix that I should have applied is to make __cmath_power()
inline.  Any other if or #if are just papering over the fundamental
problem. That is not fix.

-- Gaby


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11706




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