__SETFPUCW

Section: Linux Programmer's Manual (3)
Updated: 8 March 1997
 

NAME

__setfpucw - set fpu control word on i386 architecture  

SYNOPSIS

#include <i386/fpu_control.h>

void __setfpucw((unsigned short) control_word);
 

DESCRIPTION

__setfpucw transfer control_word to the registers of the fpu (floating point unit) on i386 architecture. This can be used to control floating point precision, rounding and floating point exceptions.  

EXAMPLE

__setfpucw(0x1372)

Set fpu control word on i386 architecture to

     - extended precision

     - rounding to nearest

     - exceptions on overflow, zero divide and NaN
 

SEE ALSO

/usr/include/i386/fpu_control.h