coss.c
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/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
**************************************************************************/
#include "guint.h"
/* ====================================================================
* ====================================================================
*
* Module: coss.c
* $Revision: 1.1.1.2 $
* $Date: 2002/10/29 08:06:43 $
* $Author: blythe $
* $Source: /root/leakn64/depot/rf/sw/n64os20l/libultra/monegi/gu/coss.c,v $
*
* ====================================================================
* ====================================================================
*/
/* coefficients for polynomial approximation of sin on +/- pi/2 */
/* ====================================================================
*
* FunctionName coss
*
* Description computes cosine of arg
*
* ====================================================================
*/
signed short
coss( unsigned short x )
{
/* 0 <= x < 0x10000 ==> 0 <= x < 2PI */
return sins ((unsigned short) (x + 0x4000));
}