.\" 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 .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