Difference between ignore bins and default

SystemVerilog
1

Hi All
I want to know what exact difference we see in default and ignore bins.

And moreover if I write like

ignore_bins others = default;

Iam getting an error but not with illegal . Why is it so?

Thanks
Anudeep

2

In reply to Anudeep J:

They are just two different ways of defining counting bins that are excluded from the coverage calculation. The key benefit of ignore_bins is excluding values that overlap with the included bins. Remember that as soon as you specify explicit bins in a coverpoint, any bin value not specified is already ignored. So the ‘ignore_bins others = default’ statement is redundant.

3

In reply to dave_59:

Thanks Dave