Excel Formula - Add column of numbers but ignore negative numbers

Help with a formula please - how do I add a column of numbers but
exclude/ignore any numbers with a negative value?

Thanks in advace

If your numbers are in column A, =SUMIF(A:A,">=0",A:A)

"view for Distribution List members" wrote:

> Help with a formula please - how do I add a column of numbers but
> exclude/ignore any numbers with a negative value?
>
> Thanks in advace