I'm compiling my first project with 64 bit support enabled. I'm running into a bunch of compiler warnings about implicit conversions to float. This is happening because I'm using fabsf() and assigning the result to a CGFloat (which is a double, not float on the new 64 bit architecture).
According to the answer on this question:
I just need to #include <tgmath.h> to solve this problem and probably change fabsf to fabs. I have at least one file where this doesn't seem to be helping. I still get the warning: implicit conversion loses floating-point precision 'double' to 'CGFloat' aka (float). Here's the line that generates that warning:
CGFloat deltaX = fabs(item.center.x-point.x);
Has anyone else run across this? How did you solve it? I'd rather not disable this warning or litter my code with a ton of typecasts.
I was able to get the tgmath.h functions to work by including the header at the top of my PCH file.
At some point (read: Xcode update) I had to start disabling Modules to get this to work. The details of such are in the question Dima links to below.
本文收集自互联网，转载请注明来源。
如有侵权，请联系[email protected] 删除。
我来说两句