/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <liboil/liboilfunction.h>

#include <liboil/liboilclasses.h>

#include <math.h>

/* XXX This gets more inaccurate as N increases */

static void

sincos_f64_i20_fast(double *dest_sin, double *dest_cos, int n, double *offset,

    double *interval)

{

	int i;

	double c,s,dc,ds,temp_s,temp_c;

	dest_sin[0] = s = sin(*offset);

	dest_cos[0] = c = cos(*offset);

	ds = sin(*interval);

	dc = cos(*interval);

	for(i=1;i<n;i++){

		temp_s = s*dc + c*ds;

		temp_c = c*dc - s*ds;

		dest_sin[i] = s = temp_s;

		dest_cos[i] = c = temp_c;

	}

}

OIL_DEFINE_IMPL (sincos_f64_i20_fast, sincos_f64);

#ifdef HAVE_SINCOS

static void

sincos_f64_sincos (double *dest_sin, double *dest_cos, int n, double *offset,

    double *interval)

{

	int i;

	for(i=0;i<n;i++){

          sincos (*offset + *interval * i, dest_sin + i, dest_cos + i);

	}

}

OIL_DEFINE_IMPL (sincos_f64_sincos, sincos_f64);

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_sincos_f64_i20_fast() {

		return &_oil_function_impl_sincos_f64_i20_fast;

}

#endif

#if 0

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_sincos_f64_sincos() {

		return &_oil_function_impl_sincos_f64_sincos;

}

#endif

#endif