https://docs.oracle.com/cd/E88353_01/html/E37846/fesetexceptflag-3m.html
fesetexceptflag - man pages section 3: Extended Library Functions, Volume 2
fegetexceptflag , fesetexceptflag - get and set floating-point status flags The fegetexceptflag() function attempts to store an implementation-defined...
man pagesextended librarysectionfunctionsvolume