Re: simple float/double question
Re: simple float/double question
- Subject: Re: simple float/double question
- From: "Clark S. Cox III" <email@hidden>
- Date: Fri, 30 May 2003 10:09:24 -0400
On Friday, May 30, 2003, at 02:54 US/Eastern, Lloyd Dupont wrote:
how to test if a float/double is a number or not ?
I mean acos(2) for example return NaN, how to know programatically
it's NaN ?
If a number is not equal to itself, then it is a NaN.
double d = ...;
if(d != d)
{
//d is NaN
}
--
http://homepage.mac.com/clarkcox3/
email@hidden
Clark S. Cox, III
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