FEGETEXCEPTFLAG(3)         POSIX Programmer's Manual        FEGETEXCEPTFLAG(3)



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       fegetexceptflag, fesetexceptflag -- get and set floating-point status
       flags

SSYYNNOOPPSSIISS
       #include <fenv.h>

       int fegetexceptflag(fexcept_t *_f_l_a_g_p, int _e_x_c_e_p_t_s);
       int fesetexceptflag(const fexcept_t *_f_l_a_g_p, int _e_x_c_e_p_t_s);

DDEESSCCRRIIPPTTIIOONN
       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 _f_e_g_e_t_e_x_c_e_p_t_f_l_a_g() function shall attempt to store an
       implementation-defined representation of the states of the floating-
       point status flags indicated by the argument _e_x_c_e_p_t_s in the object
       pointed to by the argument _f_l_a_g_p.

       The _f_e_s_e_t_e_x_c_e_p_t_f_l_a_g() function shall attempt to set the floating-point
       status flags indicated by the argument _e_x_c_e_p_t_s to the states stored in
       the object pointed to by _f_l_a_g_p.  The value pointed to by _f_l_a_g_p shall
       have been set by a previous call to _f_e_g_e_t_e_x_c_e_p_t_f_l_a_g() whose second
       argument represented at least those floating-point exceptions
       represented by the argument _e_x_c_e_p_t_s.  This function does not raise
       floating-point exceptions, but only sets the state of the flags.

RREETTUURRNN VVAALLUUEE
       If the representation was successfully stored, _f_e_g_e_t_e_x_c_e_p_t_f_l_a_g() shall
       return zero. Otherwise, it shall return a non-zero value. If the
       _e_x_c_e_p_t_s argument is zero or if all the specified exceptions were
       successfully set, _f_e_s_e_t_e_x_c_e_p_t_f_l_a_g() shall return zero. Otherwise, it
       shall return a non-zero value.

EERRRROORRSS
       No errors are defined.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _f_e_c_l_e_a_r_e_x_c_e_p_t(), _f_e_r_a_i_s_e_e_x_c_e_p_t(), _f_e_t_e_s_t_e_x_c_e_p_t()

       The Base Definitions volume of POSIX.1-2017, <<ffeennvv..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                   FEGETEXCEPTFLAG(3)
