C in a Nutshell

Name

fetestexcept

Synopsis

Tests the status flags in the floating-point environment against a bit mask

#include <fenv.h>
intfetestexcept( int excepts );

The fetestexcept() function takes as its argument a bitwise OR of the values of macros defined in fenv.h to represent the floating-point exception flags. The macros are listed under feraiseexcept() in this chapter.

fetestexcept() returns the bitwise AND of the values representing the exception flags that were set in the argument and the exception flags that are currently set in the floating-point environment.

Example

See the examples at feclearexcept() and feholdexcept() in this chapter.

See Also

feclearexcept(), feraisexcept(), feholdexcept(), fesetexceptflag(), feupdateenv(), fegetenv(), fesetenv()