pthread_attr_setfp_np.3

rtlinux-3.1源代码

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.TH "pthread_attr_setfp_np" "3" 
.SH "NAME" 
pthread_attr_setfp_np, pthread_attr_getfp_nppthread_attr_getfp_np \(em set and get floating point enable attribute 
.SH "SYNOPSIS" 
.PP 
.nf 
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#include <rtl_sched.h> 
 
int \fBpthread_attr_setfp_np\fP(pthread_attr_t \fB*attr\fR, int \fBuse_fp\fR); 
int \fBpthread_attr_getfp_np\fP(pthread_attr_t \fB*attr\fR, int \fB*use_fp\fR); 
.fi 
.SH "DESCRIPTION" 
.PP 
These functions are non-portable RTLinux extensions. 
.PP 
\fBpthread_attr_setfp_np\fP modifies the thread attribute 
object \fIattribute\fP to allow or disallow use of the floating 
point unit (FPU) in the created thread. 
\fBuse_fp\fR is zero to disallow floating-point operations, or 
non-zero to allow them. 
The thread 
attribute object \fIattr\fP first has to be initialized with 
\fBpthread_attr_init(3)\fP.   
.PP 
\fBpthread_attr_getfp_np\fP fills the location pointed to 
by \fBcpu\fR with the \fBuse_fp\fR flag from 
the attribute structure.   
.SH "RETURN VALUE" 
.PP 
All functions return 0 on success and a non-zero error code on error. 
.SH "ERRORS" 
.PP 
No errors are defined. 
.SH "NOTES" 
.PP 
By default, floating point operations are disallowed in RT-threads. 
.SH "AUTHOR" 
.PP 
Michael Barabanov (\[e-mail] (link to URL mailto:[e-mail]) \fR) 
.SH "SEE ALSO" 
\fIpthread_setfp_np(3) (link to URL pthread_setfp_np.3.html) \fR, \fIUNIX spec pthread_attr_getstacksize(3) (link to URL ../susv2/xsh/pthread_attr_getstacksize.html) \fR, \fIUNIX spec pthread_attr_setstacksize(3) (link to URL ../susv2/xsh/pthread_attr_setstacksize.html) \fR, \fIUNIX spec pthread_attr_setschedparam(3) (link to URL ../susv2/xsh/pthread_attr_setschedparam.html) \fR, \fIUNIX spec pthread_attr_init(3) (link to URL ../susv2/xsh/pthread_attr_init.html) \fR, \fIUNIX spec pthread_attr_getschedparam(3) (link to URL ../susv2/xsh/pthread_attr_getschedparam.html) \fR, \fIUNIX spec pthread_create(3) (link to URL ../susv2/xsh/pthread_create.html) \fR 
.PP 
\(co2001 FSMLabs Inc. 
.PP 
All rights reserved. 
...\" created by instant / docbook-to-man, Thu 26 Jul 2001, 11:19