Test fails when it should pass for certain real numbers

[samaursa]

REQUIRE(atan2(-862.42, 78.5149) == -1.480006);

The above code fails, with the output:

atan2(-862.42, 78.5149) == -1.48001 failed for: -1.48001 == -1.48001

I am not sure why, considering they are equal. I initially tried it with Approx, but the result was the same.

[samaursa]

My mistake, the Approx strictness was higher than I expected.

[philsquared]

You can set the tolerance level (epsilon) for each Approx call by using the syntax:
Approx( x ).epsilon( y );

I'll soon be adding the ability to specify epsilons for a range of Approx's (or all of them).

Make sure you have the latest Catch (as of last friday/ IIRC) because I did change Approx to be slightly less strict (now 100x epsilon for float)

[philsquared]

In fact I've just pushed up another commit for this.
You can now create your own Approx instance with settings for epsilon and scale.
See the last test case in https://github.com/philsquared/Catch/blob/master/projects/SelfTest/ApproxTests.cpp for an example.

Approx is a class, and usually when you use it you construct a single, temporary, instance on the fly.
But now you can create a named instance with epsilon and scale values that can be reused.
You can create this instance locally to your test case, or globally to your test app, if you like.

[samaursa]

Sorry, I should have acknowledged your commit. It works very well, thanks.

[philsquared]

Thanks for letting me know, @samaursa (eventually ;-) )