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.\" Written Sat Mar 8 10:35:08 MEZ 1997 by J. "MUFTI" Scheurich (mufti@csv.ica.uni-stuttgart.de)
.TH __SETFPUCW 3 "8 March 1997" "i386 Linux Man Page" "Linux Programmer's Manual"
.SH NAME
__setfpucw \- set fpu control word on i386 architecture
.SH SYNOPSIS
.B #include <i386/fpu_control.h>
.sp
.BI "void __setfpucw((unsigned short) " control_word ");
.br
.SH DESCRIPTION
.B __setfpucw
transfer
.I 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.
.SH EXAMPLE
.BR __setfpucw(0x1372)
Set fpu control word on i386 architecture to
.br
- extended precision
.br
- rounding to nearest
.br
- exceptions on overflow, zero divide and NaN
.br
.SH "SEE ALSO"
.BR /usr/include/i386/fpu_control.h
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