fegetexceptflag(3M)fegetexceptflag(3M)NAMEfegetexceptflag() - get floating-point exception flags
HP Integrity Server Only
The function stores a representation of the states of the floating-
point exception flags indicated by the argument excepts in the object
pointed to by the argument flagp. The excepts argument can be con‐
structed as a bitwise OR of the floating-point exception macros: and
represents all the floating-point exceptions. The object into which
the floating-point exception flags are stored can be passed to to
restore the system exception flags, but the representation of the
floating-point exception flags stored in the object is otherwise
Use instead of to determine which floating-point exception flags are
To use this function, compile either with the default option or with
the and options. Make sure your program includes
For Integrity servers, specify on the compiler command line or place
the call to this function under the effect of an affirmative pragma:
If the pragma is placed outside of any top-level declarations in a
file, the pragma will apply to all declarations in the compilation fol‐
lowing the pragma until another pragma is encountered or until the end
of the file is reached.
If the pragma is placed at the beginning of a block (compound state‐
ment), the pragma will apply until another pragma is encountered or
until the end of the block is reached.
For PA-RISC, you might need to use the compiler option in order to pre‐
vent optimizations that can undermine the specified behavior of this
Link in the math library by specifying on the compiler or linker com‐
For more information, see the at the following site:
Integrity Server Only
This function always returns 0, indicating that a representation was
No errors are defined.
Store the overflow and invalid floating-point exception flags:
SEE ALSOfeclearexcept(3M), fegettrapenable(3M), feraiseexcept(3M), fesetexcept‐
flag(3M), fesettrapenable(3M), fetestexcept(3M), fenv(5).
: ISO/IEC C99 (including Annex F, "IEC 60559 floating-point arith‐