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<HTML
><HEAD
><TITLE
>pthread_attr_setfp_np</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
"></HEAD
><BODY
CLASS="REFENTRY"
><H1
><A
NAME="AEN1"
>pthread_attr_setfp_np</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5"
></A
><H2
>Name</H2
>pthread_attr_setfp_np, pthread_attr_getfp_np -- set and get floating point enable attribute</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN9"
></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_attr_setfp_np</TT
>(pthread_attr_t <TT
CLASS="PARAMETER"
><I
>*attr</I
></TT
>, int <TT
CLASS="PARAMETER"
><I
>use_fp</I
></TT
>);
int <TT
CLASS="FUNCTION"
>pthread_attr_getfp_np</TT
>(pthread_attr_t <TT
CLASS="PARAMETER"
><I
>*attr</I
></TT
>, int <TT
CLASS="PARAMETER"
><I
>*use_fp</I
></TT
>);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN17"
></A
><H2
>DESCRIPTION</H2
><P
>These functions are non-portable RTLinux extensions.</P
><P
> <TT
CLASS="FUNCTION"
>pthread_attr_setfp_np</TT
> modifies the thread attribute
object <I
CLASS="EMPHASIS"
>attribute</I
> to allow or disallow use of the floating
point unit (FPU) in the created thread.
<TT
CLASS="PARAMETER"
><I
>use_fp</I
></TT
> is zero to disallow floating-point operations, or
non-zero to allow them.
The thread
attribute object <I
CLASS="EMPHASIS"
>attr</I
> first has to be initialized with
<TT
CLASS="FUNCTION"
>pthread_attr_init(3)</TT
>. </P
><P
><TT
CLASS="FUNCTION"
>pthread_attr_getfp_np</TT
> fills the location pointed to
by <TT
CLASS="PARAMETER"
><I
>cpu</I
></TT
> with the <TT
CLASS="PARAMETER"
><I
>use_fp</I
></TT
> flag from
the attribute structure. </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN30"
></A
><H2
>RETURN VALUE</H2
><P
>All functions return 0 on success and a non-zero error code on error.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN33"
></A
><H2
>ERRORS</H2
><P
>No errors are defined.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN36"
></A
><H2
>NOTES</H2
><P
>By default, floating point operations are disallowed in RT-threads.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN39"
></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="AEN43"
></A
><H2
>SEE ALSO</H2
><A
HREF="pthread_setfp_np.3.html"
TARGET="_top"
>pthread_setfp_np(3)</A
>, <A
HREF="../susv2/xsh/pthread_attr_getstacksize.html"
TARGET="_top"
>UNIX spec pthread_attr_getstacksize(3)</A
>, <A
HREF="../susv2/xsh/pthread_attr_setstacksize.html"
TARGET="_top"
>UNIX spec pthread_attr_setstacksize(3)</A
>, <A
HREF="../susv2/xsh/pthread_attr_setschedparam.html"
TARGET="_top"
>UNIX spec pthread_attr_setschedparam(3)</A
>, <A
HREF="../susv2/xsh/pthread_attr_init.html"
TARGET="_top"
>UNIX spec pthread_attr_init(3)</A
>, <A
HREF="../susv2/xsh/pthread_attr_getschedparam.html"
TARGET="_top"
>UNIX spec pthread_attr_getschedparam(3)</A
>, <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
>
|
