mirror of https://github.com/mkerrisk/man-pages
61 lines
2.0 KiB
Plaintext
61 lines
2.0 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "FEHOLDEXCEPT" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" feholdexcept
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.SH NAME
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feholdexcept \- save current floating-point environment
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.SH SYNOPSIS
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.LP
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\fB#include <fenv.h>
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.br
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.sp
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int feholdexcept(fenv_t *\fP\fIenvp\fP\fB);
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The \fIfeholdexcept\fP() function shall save the current floating-point
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environment in the object pointed to by \fIenvp\fP,
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clear the floating-point status flags, and then install a non-stop
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(continue on floating-point exceptions) mode, if available, for
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all floating-point exceptions.
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.SH RETURN VALUE
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.LP
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The \fIfeholdexcept\fP() function shall return zero if and only if
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non-stop floating-point exception handling was successfully
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installed.
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.SH ERRORS
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.LP
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No errors are defined.
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.LP
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None.
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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The \fIfeholdexcept\fP() function should be effective on typical IEC\ 60559:1989
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standard implementations which have the
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default non-stop mode and at least one other mode for trap handling
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or aborting. If the implementation provides only the non-stop
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mode, then installing the non-stop mode is trivial.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fIfegetenv\fP() , \fIfesetenv\fP() , \fIfeupdateenv\fP() , the Base
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Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<fenv.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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