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authorMichael Kerrisk <mtk.manpages@gmail.com>2004-11-03 13:51:07 +0000
committerMichael Kerrisk <mtk.manpages@gmail.com>2004-11-03 13:51:07 +0000
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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "FEHOLDEXCEPT" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" feholdexcept
+.SH NAME
+feholdexcept \- save current floating-point environment
+.SH SYNOPSIS
+.LP
+\fB#include <fenv.h>
+.br
+.sp
+int feholdexcept(fenv_t *\fP\fIenvp\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIfeholdexcept\fP() function shall save the current floating-point
+environment in the object pointed to by \fIenvp\fP,
+clear the floating-point status flags, and then install a non-stop
+(continue on floating-point exceptions) mode, if available, for
+all floating-point exceptions.
+.SH RETURN VALUE
+.LP
+The \fIfeholdexcept\fP() function shall return zero if and only if
+non-stop floating-point exception handling was successfully
+installed.
+.SH ERRORS
+.LP
+No errors are defined.
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+The \fIfeholdexcept\fP() function should be effective on typical IEC\ 60559:1989
+standard implementations which have the
+default non-stop mode and at least one other mode for trap handling
+or aborting. If the implementation provides only the non-stop
+mode, then installing the non-stop mode is trivial.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIfegetenv\fP() , \fIfesetenv\fP() , \fIfeupdateenv\fP() , the Base
+Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<fenv.h>\fP
+.SH COPYRIGHT
+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 original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .