Re: CGFloat and 64 Bit
Re: CGFloat and 64 Bit
- Subject: Re: CGFloat and 64 Bit
- From: Michael Ash <email@hidden>
- Date: Mon, 9 Feb 2009 12:41:11 -0500
On Mon, Feb 9, 2009 at 3:33 AM, Jean-Daniel Dupas
<email@hidden> wrote:
>
> Le 9 févr. 09 à 06:37, Rob Keniger a écrit :
>
>>
>> On 08/02/2009, at 9:52 PM, Gerriet M. Denkmann wrote:
>>
>>> When I build a Cocoa Project with 32/64 bit, this line gets a warning:
>>> NSSize a = NSMakeSize( 11.2, 22.4);
>>> which went away using:
>>> NSSize a = NSMakeSize( (CGFloat)11.2, (CGFloat)22.4);
>>> Is this the only and correct way to use NSMakeSize() ? Looks kind of
>>> ugly.
>>
>>
>> Try this:
>>
>> NSSize a = NSMakeSize( 11.2f, 22.4f);
>>
>> The "f" suffix is a hint to the compiler that it's a float value.
>
> A very bad idea as it would force usage of float in 64bits applications
> where NSSize expect 64 bits CGFloat.
So? Float converts to double just fine. There are no bad consequences
for passing 11.2f to a function that takes double, aside from an
utterly negligible loss of precision when representing the fractional
part.
Mike
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