Linux 2.6 - man page for feholdexcept (linux section 3posix)
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FEHOLDEXCEPT(P) POSIX Programmer's Manual FEHOLDEXCEPT(P)
feholdexcept - save current floating-point environment
int feholdexcept(fenv_t *envp);
The feholdexcept() function shall save the current floating-point environment in the
object pointed to by envp, clear the floating-point status flags, and then install a non-
stop (continue on floating-point exceptions) mode, if available, for all floating-point
The feholdexcept() function shall return zero if and only if non-stop floating-point
exception handling was successfully installed.
No errors are defined.
The following sections are informative.
The feholdexcept() function should be effective on typical IEC 60559:1989 standard imple-
mentations which have the default non-stop mode and at least one other mode for trap han-
dling or aborting. If the implementation provides only the non-stop mode, then installing
the non-stop mode is trivial.
fegetenv() , fesetenv() , feupdateenv() , the Base Definitions 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 FEHOLDEXCEPT(P)
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