feclearexcept - Man Page

clear floating-point exception


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.


#include <fenv.h>

int feclearexcept(int excepts);


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 feclearexcept() function shall attempt to clear the supported floating-point exceptions represented by excepts.

Return Value

If the argument is zero or if all the specified exceptions were successfully cleared, feclearexcept() shall return zero. Otherwise, it shall return a non-zero value.


No errors are defined.

The following sections are informative.



Application Usage




Future Directions


See Also

fegetexceptflag(), feraiseexcept(), fetestexcept()

The Base Definitions volume of POSIX.1-2017, <fenv.h>

Referenced By

acos(3p), acosh(3p), asin(3p), asinh(3p), atan(3p), atan2(3p), atanh(3p), ceil(3p), cos(3p), cosh(3p), erf(3p), erfc(3p), exp(3p), exp2(3p), expm1(3p), fdim(3p), fegetexceptflag(3p), fenv.h(0p), feraiseexcept(3p), fetestexcept(3p), floor(3p), fma(3p), fmod(3p), hypot(3p), ilogb(3p), j0(3p), ldexp(3p), lgamma(3p), llrint(3p), llround(3p), log(3p), log10(3p), log1p(3p), log2(3p), logb(3p), lrint(3p), lround(3p), nearbyint(3p), nextafter(3p), pow(3p), remainder(3p), remquo(3p), rint(3p), round(3p), scalbln(3p), sin(3p), sinh(3p), sqrt(3p), tan(3p), tanh(3p), tgamma(3p), y0(3p).

2017 IEEE/The Open Group POSIX Programmer's Manual