Linux 2.6 - man page for feraiseexcept (linux section 3posix)
|Linux & Unix Commands - Search Man Pages
FERAISEEXCEPT(P) POSIX Programmer's Manual FERAISEEXCEPT(P)
feraiseexcept - raise floating-point exception
int feraiseexcept(int excepts);
The feraiseexcept() function shall attempt to raise the supported floating-point excep-
tions represented by the argument excepts. The order in which these floating-point excep-
tions are raised is unspecified. Whether the feraiseexcept() function additionally raises
the inexact floating-point exception whenever it raises the overflow or underflow float-
ing-point exception is implementation-defined.
If the argument is zero or if all the specified exceptions were successfully raised,
feraiseexcept() shall return zero. Otherwise, it shall return a non-zero value.
No errors are defined.
The following sections are informative.
The effect is intended to be similar to that of floating-point exceptions raised by arith-
metic operations. Hence, enabled traps for floating-point exceptions raised by this func-
tion are taken.
Raising overflow or underflow is allowed to also raise inexact because on some architec-
tures the only practical way to raise an exception is to execute an instruction that has
the exception as a side effect. The function is not restricted to accept only valid coin-
cident expressions for atomic operations, so the function can be used to raise exceptions
accrued over several operations.
feclearexcept() , fegetexceptflag() , fesetexceptflag() , fetestexcept() , the Base Defi-
nitions volume of IEEE Std 1003.1-2001, <fenv.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 FERAISEEXCEPT(P)
All times are GMT -4. The time now is 06:22 PM.