__setfpucw man page on OpenMandriva

Man page or keyword search:  
man Server   8135 pages
apropos Keyword Search (all sections)
Output format
OpenMandriva logo
[printable version]

__SETFPUCW(3)		   Linux Programmer's Manual		 __SETFPUCW(3)

NAME
       __setfpucw - set FPU control word on i386 architecture (obsolete)

SYNOPSIS
       #include <i386/fpu_control.h>

       void __setfpucw(unsigned short control_word);

DESCRIPTION
       __setfpucw() transfers control_word to the registers of the FPU (float‐
       ing-point unit) on the i386 architecture.  This	was  used  to  control
       floating-point precision, rounding and floating-point exceptions.

CONFORMING TO
       This function was a nonstandard GNU extension.

NOTES
       As  of  glibc  2.1 this function does not exist anymore.	 There are new
       functions from C99, with prototypes in <fenv.h>, to control FPU	round‐
       ing  modes,  like  fegetround(3), fesetround(3), and the floating-point
       environment, like fegetenv(3),  feholdexcept(3),	 fesetenv(3),  feupda‐
       teenv(3),  and  FPU exception handling, like feclearexcept(3), fegetex‐
       ceptflag(3), feraiseexcept(3), fesetexceptflag(3), and fetestexcept(3).

       If direct  access  to  the  FPU	control	 word  is  still  needed,  the
       _FPU_GETCW and _FPU_SETCW macros from <fpu_control.h> can be used.

EXAMPLE
       __setfpucw(0x1372)

       Set FPU control word on the i386 architecture to
	    - extended precision
	    - rounding to nearest
	    - exceptions on overflow, zero divide and NaN

SEE ALSO
       feclearexcept(3)
       <fpu_control.h>

COLOPHON
       This  page  is  part of release 3.58 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux				  2012-12-31			 __SETFPUCW(3)
[top]

List of man pages available for OpenMandriva

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net