RE: [boost] [Test] Using BOOST_CHECK_CLOSE with non hogneous type s

From: Rozental, Gennadiy (gennadiy.rozental_at_[hidden])
Date: 2003-10-06 11:55:08

> Hello,
> 
> I am new tho boost::test, and I tried to use it the following way :
> 
> BOOST_CHECK_CLOSE(3.1415f, 3.1415, 1e-06);
> 
> The compiler (VC++7.1) complains about using a float and a double in 
> this comparison. And with a more complex expression, the 
> message becomes unclear.
> 
> I am not sure what would be best to solve this problem : Making 
> template close_at_tolerance a two parameters template (is it 
> worth the 
> added complexity?), or just documenting this limit.
> 
> Greeting,
> 
> -- 
> Loïc

When you want to use floating point comparisons it's important to use the
same type everywhere. And the error message seems to be correct and
descriptive.
I may need to state it explicitly, but it seems obvious.

Gennadiy.