флаги состояния точки (point status flags)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
fegetexceptflag, fesetexceptflag — get and set floating-point
status flags
Синопсис (Synopsis)
#include <fenv.h>
int fegetexceptflag(fexcept_t *flagp, int excepts);
int fesetexceptflag(const fexcept_t *flagp, int excepts);
Описание (Description)
The functionality described on this reference page is aligned
with the ISO C standard. Any conflict between the requirements
described here and the ISO C standard is unintentional. This
volume of POSIX.1‐2017 defers to the ISO C standard.
The fegetexceptflag() function shall attempt to store an
implementation-defined representation of the states of the
floating-point status flags indicated by the argument excepts in
the object pointed to by the argument flagp.
The fesetexceptflag() function shall attempt to set the floating-
point status flags indicated by the argument excepts to the
states stored in the object pointed to by flagp. The value
pointed to by flagp shall have been set by a previous call to
fegetexceptflag() whose second argument represented at least
those floating-point exceptions represented by the argument
excepts. This function does not raise floating-point exceptions,
but only sets the state of the flags.
Возвращаемое значение (Return value)
If the representation was successfully stored, fegetexceptflag()
shall return zero. Otherwise, it shall return a non-zero value.
If the excepts argument is zero or if all the specified
exceptions were successfully set, fesetexceptflag() shall return
zero. Otherwise, it shall return a non-zero value.
Ошибки (Error)
No errors are defined.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
feclearexcept(3p), feraiseexcept(3p), fetestexcept(3p)
The Base Definitions volume of POSIX.1‐2017, fenv.h(0p)
