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<HTML
><HEAD
><TITLE
>pthread_setfp_np</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
"></HEAD
><BODY
CLASS="REFENTRY"
><H1
><A
NAME="AEN1"
>pthread_setfp_np</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5"
></A
><H2
>Name</H2
>pthread_setfp_np -- allow use of floating-point operations in a thread.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
> #include <rtl_sched.h>
int <TT
CLASS="FUNCTION"
>pthread_setfp_np</TT
>(pthread_t <TT
CLASS="PARAMETER"
><I
>thread</I
></TT
>, int <TT
CLASS="PARAMETER"
><I
>flag</I
></TT
>);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN13"
></A
><H2
>DESCRIPTION</H2
><P
> This function is a non-portable Realtime Linux extension.
<TT
CLASS="FUNCTION"
>pthread_setfp_np</TT
> allows or disallows the use of
floating-point arithmetic operations in a realtime thread.
<TT
CLASS="PARAMETER"
><I
>flag</I
></TT
> is zero to disallow floating-point operations, or
non-zero to allow them. </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN18"
></A
><H2
>RETURN VALUE</H2
><P
><TT
CLASS="FUNCTION"
>pthread_setfp_np</TT
> returns 0 on success and a non-zero error code on error.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN22"
></A
><H2
>NOTES</H2
><P
>This function may not be used on threads assigned to a CPU other than the current.
Use of <TT
CLASS="FUNCTION"
>pthread_attr_setfp_np</TT
> is recommended.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN26"
></A
><H2
>ERRORS</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>EINVAL</DT
><DD
><P
><TT
CLASS="FUNCTION"
>pthread_setfp_np</TT
> was called on a thread running on a different CPU.</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN34"
></A
><H2
>NOTES</H2
><P
>By default, floating point operations are disallowed in RT-threads.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN37"
></A
><H2
>AUTHOR</H2
><P
>Michael Barabanov (<A
HREF="mailto:baraban@fsmlabs.com"
TARGET="_top"
>baraban@fsmlabs.com</A
>)</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN41"
></A
><H2
>SEE ALSO</H2
><A
HREF="../susv2/xsh/pthread_create.html"
TARGET="_top"
>UNIX spec pthread_create(3)</A
><P
>2001 FSMLabs Inc.</P
><P
>All rights reserved.</P
></DIV
></BODY
></HTML
>
|
