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/*
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* LIBOIL - Library of Optimized Inner Loops
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* Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <liboil/liboilfunction.h>
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#include <liboil/liboilclasses.h>
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#include <math.h>
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/* XXX This gets more inaccurate as N increases */
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static void
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sincos_f64_i20_fast(double *dest_sin, double *dest_cos, int n, double *offset,
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double *interval)
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{
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int i;
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double c,s,dc,ds,temp_s,temp_c;
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dest_sin[0] = s = sin(*offset);
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dest_cos[0] = c = cos(*offset);
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ds = sin(*interval);
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dc = cos(*interval);
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for(i=1;i<n;i++){
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temp_s = s*dc + c*ds;
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temp_c = c*dc - s*ds;
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dest_sin[i] = s = temp_s;
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dest_cos[i] = c = temp_c;
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}
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}
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OIL_DEFINE_IMPL (sincos_f64_i20_fast, sincos_f64);
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#ifdef HAVE_SINCOS
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static void
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sincos_f64_sincos (double *dest_sin, double *dest_cos, int n, double *offset,
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double *interval)
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{
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int i;
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for(i=0;i<n;i++){
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sincos (*offset + *interval * i, dest_sin + i, dest_cos + i);
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}
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}
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OIL_DEFINE_IMPL (sincos_f64_sincos, sincos_f64);
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#endif
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#ifdef __SYMBIAN32__
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OilFunctionImpl* __oil_function_impl_sincos_f64_i20_fast() {
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return &_oil_function_impl_sincos_f64_i20_fast;
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}
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#endif
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#if 0
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#ifdef __SYMBIAN32__
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OilFunctionImpl* __oil_function_impl_sincos_f64_sincos() {
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return &_oil_function_impl_sincos_f64_sincos;
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}
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#endif
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#endif
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