--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-21
20:31 ---
Again this is not a bug as signbitf says about nonzero value and nothing about
the exact value. In fact
it changes based on optimizations is because well some times it is for size
reasons, look at -Os an
--- Additional Comments From ddneilson at gmail dot com 2005-08-21 20:28
---
One of the really odd things, that makes me still think this is a bug in some
way is that the definition of "mysignbit()" that I gave in signbit.cpp is
identical to the definition of __signbitf(x) as given in bi
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-18
21:41 ---
This is not a bug as signbit just have to return a non zero value if it has the
value passed has its sign
bit set.
So defining it this way:
inline int mysignbit(float x) {
union { float f; unsigned int i
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:49
---
Created an attachment (id=9541)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9541&action=view)
Output from running the program with -O1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23469
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:49
---
Created an attachment (id=9540)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9540&action=view)
Output from running the program without optimizations
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=234
--
What|Removed |Added
Attachment #9537|Ouput from compile with: g++|Output from compile with:
description|-Wall -v -save-temps|g++ -Wall -v -save-temps
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:47
---
Created an attachment (id=9539)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9539&action=view)
Output from compile with: g++ -Wall -v -O1 -save-temps signbit.cpp
--
http://gcc.gnu.org/bugzilla/show_b
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:46
---
Created an attachment (id=9538)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9538&action=view)
.ii file generated by compiling with: g++ -Wall -v -O1 -save-temps signbit.cpp
--
http://gcc.gnu.org/bug
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:45
---
Created an attachment (id=9537)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9537&action=view)
Ouput from compile with: g++ -Wall -v -save-temps signbit.cpp
--
http://gcc.gnu.org/bugzilla/show_bug.cg
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:44
---
Created an attachment (id=9536)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9536&action=view)
.ii file generated by compiling with: g++ -Wall -v -save-temps signbit.cpp
--
http://gcc.gnu.org/bugzill
--- Additional Comments From ddneilson at gmail dot com 2005-08-18 20:43
---
Created an attachment (id=9535)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9535&action=view)
Source file of example
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23469
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