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Re: How to implement float min(float x, ...) ?
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Re: How to implement float min(float x, ...) ?


  • Subject: Re: How to implement float min(float x, ...) ?
  • From: Roland King <email@hidden>
  • Date: Mon, 17 Nov 2008 16:18:43 +0800

it will work for simple types like float, but you need to deal with figuring out you're at the end of the list.

ie you can call va_arg( xxx, float) and get a float, but you don't know how many of them you have so you don't know where to stop.

You could use a defined nanf() value to show the end of your list (similar to the way objective-C uses nil) I suppose, or else have something like

min( int count, float x, .. ) where count denotes how many you have.

On Nov 17, 2008, at 3:38 PM, Oleg Krupnov wrote:

I apologize, this is plain old C, not Cocoa-specific question, but the
fastest way to get the answer.

I want to create a function that finds the minimum out of a
variable-length list of simple float arguments. In other words, I want
this function:

float min(float x, ...);

Can anyone suggest the implementation?

I have read this: http://developer.apple.com/qa/qa2005/qa1405.html
but it seems to address arguments of type "id", not sure it will work
for simple integral types like float.

Thanks!
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References: 
 >How to implement float min(float x, ...) ? (From: "Oleg Krupnov" <email@hidden>)

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