Use of undeclared identifier 'fpgetmask'

[bob prohaska]

use of undeclared identifier 'fpgetmask'

A web search for the phrase finds a very few references, most prominently
from the year 2014:
https://www.where-i-go.com/tag/fpsetmask
but the context is different (mysql server).

There is a workaround detailed in the web page, but after nearly four
years it's hard to believe that's still appropriate.

Is there a more up-to-date solution?

Thanks for reading,

bob prohaska