Standards
| Standards / Extensions |
C or C++ |
Dependencies |
|---|
C99
Single UNIX Specification, Version 3
C++ TR1 C99
|
both |
z/OS V1R7 |
Format
#define _ISOC99_SOURCE
#include <fenv.h>
int fetestexcept(int excepts);
General description
fetestexcept() determines
which of a specified subset of floating-point exception flags are
currently set.
excepts specifies the floating-point
status flags to be queried.
Note: The following table shows the viable
formats for these functions. See
IEEE binary floating-point for
more information about IEEE Binary Floating-Point.
| Function |
Hex |
IEEE |
|---|
| fetestexcept |
|
X |
Returned value
If successful, fetestexcept()
returns the value of the bitwise OR for the floating-point exception
macros corresponding to the currently set floating-point exceptions
included in excepts.