Re: Very strange problem with comparing floating point numbers

[Maxim Fomin]

On Sunday, 30 September 2012 at 17:07:19 UTC, monarch_dodra wrote:
As a rule of thumb, NEVER use opEqual with floating point types 
aniways. You need to use some sort of comparison with leway for 
error, such as std.math.approxEqual.

It is possible to compare exactly floating point types by binary 
comparison, if it provides some benefits.

import std.stdio;
import std.math;

@property float getFloat()
{
   return sqrt(1.1);
}

void main()
{
   writeln(getFloat is getFloat);  // doesn't fail
}