Re: -ansi flag effects

On Tuesday 27 May 2003 9:19 pm, Andrew Binkley wrote:
...
> certain (logb, scalbn, log1p) math functions to work.  I have determined
...
> that this problem occurs only when I use the -ansi flag.  If -ansi is used,

These are not ANSI functions, so it's right that they should be excluded. If 
you also compile with -Wall (there is a more specific flag but I don't know 
what it is off hand), then the compiler will warn when you try to use a 
function that isn't prototyped. I recommend always using -Wall unless you are 
compiling someone else's code :)

> results.  If -ansi isn't used then there are no problems.  Is there
> documentation (I have come across some partial documentation, but nothing
> exhaustive) on which functions the -ansi flag effects?

If you are on a Unix system, see the man pages for the various functions; they 
should all include information on whether they are part of the ANSI standard 
or not. DJGPP's documentation also includes this; I don't know about MinGW or 
other systems.

Hope that helps,

Ben