Re: strange compiler warnings - can't get rid of them?
Re: strange compiler warnings - can't get rid of them?
- Subject: Re: strange compiler warnings - can't get rid of them?
- From: Jean-Daniel Dupas <email@hidden>
- Date: Tue, 27 Nov 2007 18:39:30 +0100
The warning is correct (you asked for -Wconversion after all). The
type of the expression (iconSize.width * 0.75) is double, and you are
converting it to a float by passing it to NSMakeSize.
-Wconversion largely exists to catch problems when going from K&R C
(where it was quite tricky to pass a 'float' argument) to ANSI/ISO C ,
and as such doesn't have much use in other situations.
You can either turn off the warning or use this instead:
NSSize warningIconSize = {iconSize.width * 0.75, iconSize.height *
0.75};
You can also do NSSize iconSize = {iconSize.width * 0.75f,
iconSize.height * 0.75f};
but it will be problematic with 64 bit compilation as NSSize on
64bits plateform uses double instead of float.
Maybe doing something like this will be ok for both cases:
NSSize iconSize = {iconSize.width * (CGFloat)0.75, iconSize.height *
(CGFloat)0.75};
Jean-Daniel
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