Comparing arrays of floats?

[anonymous via Digitalmars-d-learn]

On Saturday 10 October 2015 00:14, Straivers wrote:

> Is it a bit-by-bit comparison,

no

> is the std.math.approxEqual function get called for 
> each element,

no

> or is it byte-by-byte across the entire array?

no

After comparing the lengths, the elements are checked for equality one by 
one, using the usual `==` operator.

`==` is different from bitwise comparison. For example, -0f and +0f are `==` 
equal but have different bits, and NaNs are equal no nothing, not even 
themselves.