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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "op_addin.hxx"
#include "formulagroup.hxx"
#include "document.hxx"
#include "formulacell.hxx"
#include "tokenarray.hxx"
#include "compiler.hxx"
#include "interpre.hxx"
#include <formula/vectortoken.hxx>
#include <sstream>
using namespace formula;
namespace sc { namespace opencl {
void OpBesselj::GenSlidingWindowFunction(std::stringstream &ss,
const std::string &sSymName, SubArguments &vSubArguments)
{
ss << "\ndouble " << sSymName;
ss << "_" << BinFuncName() << "(";
for (unsigned i = 0; i < vSubArguments.size(); i++)
{
if (i)
ss << ",";
vSubArguments[i]->GenSlidingWindowDecl(ss);
}
ss << ") {\n";
ss << " int gid0 = get_global_id(0);\n";
ss << " double x = 0.0;\n";
ss << " double N = 0.0;\n";
if(vSubArguments.size() != 2)
{
ss << " return DBL_MAX;\n" << "}\n";
return ;
}
FormulaToken *tmpCur0 = vSubArguments[0]->GetFormulaToken();
assert(tmpCur0);
if(ocPush == vSubArguments[0]->GetFormulaToken()->GetOpCode())
{
if(tmpCur0->GetType() == formula::svSingleVectorRef)
{
const formula::SingleVectorRefToken*tmpCurSVR0 =
static_cast<const formula::SingleVectorRefToken *>(tmpCur0);
#ifdef ISNAN
ss << " if (gid0 < " << tmpCurSVR0->GetArrayLength() << ")\n";
ss << " {\n";
#endif
ss << " x = ";
ss << vSubArguments[0]->GenSlidingWindowDeclRef() << ";\n";
#ifdef ISNAN
ss << " if (isNan(x))\n";
ss << " x = 0.0;\n";
ss << " }\n";
#endif
}
else if(tmpCur0->GetType() == formula::svDouble)
{
ss << " x = " << tmpCur0->GetDouble() << ";\n";
}
else
{
ss << " return DBL_MAX;\n" << "}\n";
return ;
}
}
else
{
ss << " x = ";
ss << vSubArguments[0]->GenSlidingWindowDeclRef() << ";\n";
}
FormulaToken *tmpCur1 = vSubArguments[1]->GetFormulaToken();
assert(tmpCur1);
if(ocPush == vSubArguments[1]->GetFormulaToken()->GetOpCode())
{
if(tmpCur1->GetType() == formula::svSingleVectorRef)
{
const formula::SingleVectorRefToken*tmpCurSVR1 =
static_cast<const formula::SingleVectorRefToken *>(tmpCur1);
#ifdef ISNAN
ss << " if (gid0 < " << tmpCurSVR1->GetArrayLength() << ")\n";
ss << " {\n";
#endif
ss << " N = ";
ss << vSubArguments[1]->GenSlidingWindowDeclRef() << ";\n";
#ifdef ISNAN
ss << " if (isNan(N))\n";
ss << " N = 0.0;\n";
ss << " }\n";
#endif
}
else if(tmpCur1->GetType() == formula::svDouble)
{
ss << " N = " << tmpCur1->GetDouble() << ";\n";
}
else
{
ss << " return DBL_MAX;\n" << "}\n";
return ;
}
}
else
{
ss << " N = ";
ss << vSubArguments[1]->GenSlidingWindowDeclRef() << ";\n";
}
ss << " double f_PI = 3.1415926535897932385;\n";
ss << " double f_2_DIV_PI = 2.0 / f_PI;\n";
ss << " double f_PI_DIV_2 = f_PI / 2.0;\n";
ss << " double f_PI_DIV_4 = f_PI / 4.0;\n";
ss << " if( N < 0.0 )\n";
ss << " return DBL_MAX;\n";
ss << " if (x == 0.0)\n";
ss << " return (N == 0.0) ? 1.0 : 0.0;\n";
ss << " double fSign = ((int)N % 2 == 1 && x < 0.0) ? -1.0 : 1.0;\n";
ss << " double fX = fabs(x);\n";
ss << " double fMaxIteration = 9000000.0;\n";
ss << " double fEstimateIteration = fX * 1.5 + N;\n";
ss << " bool bAsymptoticPossible = pow(fX,0.4) > N;\n";
ss << " if (fEstimateIteration > fMaxIteration)\n";
ss << " {\n";
ss << " if (bAsymptoticPossible)\n";
ss << " return fSign * sqrt(f_2_DIV_PI/fX)";
ss << "* cos(fX-N*f_PI_DIV_2-f_PI_DIV_4);\n";
ss << " else\n";
ss << " return DBL_MAX;\n";
ss << " }\n";
ss << " double epsilon = 1.0e-15;\n";
ss << " bool bHasfound = false;\n";
ss << " double k= 0.0;\n";
ss << " double u ;\n";
ss << " double m_bar;\n";
ss << " double g_bar;\n";
ss << " double g_bar_delta_u;\n";
ss << " double g = 0.0;\n";
ss << " double delta_u = 0.0;\n";
ss << " double f_bar = -1.0;\n";
ss << " if (N==0)\n";
ss << " {\n";
ss << " u = 1.0;\n";
ss << " g_bar_delta_u = 0.0;\n";
ss << " g_bar = - 2.0/fX; \n";
ss << " delta_u = g_bar_delta_u / g_bar;\n";
ss << " u = u + delta_u ;\n";
ss << " g = -1.0 / g_bar; \n";
ss << " f_bar = f_bar * g;\n";
ss << " k = 2.0;\n";
ss << " }\n";
ss << " if (N!=0)\n";
ss << " {\n";
ss << " u=0.0;\n";
ss << " for (k =1.0; k<= N-1; k = k + 1.0)\n";
ss << " {\n";
ss << " m_bar=2.0 * fmod(k-1.0, 2.0) * f_bar;\n";
ss << " g_bar_delta_u = - g * delta_u - m_bar * u;\n";
ss << " g_bar = m_bar - 2.0*k/fX + g;\n";
ss << " delta_u = g_bar_delta_u / g_bar;\n";
ss << " u = u + delta_u;\n";
ss << " g = -1.0/g_bar;\n";
ss << " f_bar=f_bar * g;\n";
ss << " }\n";
ss << " m_bar=2.0 * fmod(k-1.0, 2.0) * f_bar;\n";
ss << " g_bar_delta_u = f_bar - g * delta_u - m_bar * u;\n";
ss << " g_bar = m_bar - 2.0*k/fX + g;\n";
ss << " delta_u = g_bar_delta_u / g_bar;\n";
ss << " u = u + delta_u;\n";
ss << " g = -1.0/g_bar;\n";
ss << " f_bar = f_bar * g;\n";
ss << " k = k + 1.0;\n";
ss << " }\n";
ss << " do\n";
ss << " {\n";
ss << " m_bar = 2.0 * fmod(k-1.0, 2.0) * f_bar;\n";
ss << " g_bar_delta_u = - g * delta_u - m_bar * u;\n";
ss << " g_bar = m_bar - 2.0*k/fX + g;\n";
ss << " delta_u = g_bar_delta_u / g_bar;\n";
ss << " u = u + delta_u;\n";
ss << " g = -pow(g_bar,-1.0);\n";
ss << " f_bar = f_bar * g;\n";
ss << " bHasfound = (fabs(delta_u)<=fabs(u)*epsilon);\n";
ss << " k = k + 1.0;\n";
ss << " }\n";
ss << " while (!bHasfound && k <= fMaxIteration);\n";
ss << " if (bHasfound)\n";
ss << " return u * fSign;\n";
ss << " else\n";
ss << " return DBL_MAX;\n";
ss << "}";
}
void OpGestep::GenSlidingWindowFunction(
std::stringstream &ss,const std::string &sSymName,
SubArguments &vSubArguments)
{
ss << "\ndouble " << sSymName;
ss << "_"<< BinFuncName() <<"(";
for (unsigned i = 0; i < vSubArguments.size(); i++)
{
if (i)
ss << ",";
vSubArguments[i]->GenSlidingWindowDecl(ss);
}
ss << ")\n";
ss << "{\n";
ss << " double tmp=0,tmp0 =0,tmp1 = 0;\n";
ss << " int gid0=get_global_id(0);\n";
size_t i = vSubArguments.size();
ss <<"\n";
for (i = 0; i < vSubArguments.size(); i++)
{
FormulaToken *pCur = vSubArguments[i]->GetFormulaToken();
assert(pCur);
if (pCur->GetType() == formula::svSingleVectorRef)
{
#ifdef ISNAN
const formula::SingleVectorRefToken& rSVR =
dynamic_cast< const formula::SingleVectorRefToken& >(*pCur);
ss << " if (gid0 < " << rSVR.GetArrayLength() << ")\n";
ss << " {\n";
#endif
}
else if (pCur->GetType() == formula::svDouble)
{
#ifdef ISNAN
ss << " {\n";
#endif
}
else
{
#ifdef ISNAN
#endif
}
#ifdef ISNAN
if(ocPush==vSubArguments[i]->GetFormulaToken()->GetOpCode())
{
ss << " if (isNan(";
ss << vSubArguments[i]->GenSlidingWindowDeclRef();
ss << "))\n";
ss << " tmp"<<i<<" = 0;\n";
ss << " else\n";
ss << " tmp"<<i<<" = ";
ss << vSubArguments[i]->GenSlidingWindowDeclRef();
ss << ";\n }\n";
}
else
{
ss << "tmp"<<i<<" ="<<vSubArguments[i]->GenSlidingWindowDeclRef();
ss <<";\n";
}
#endif
}
ss << " tmp =tmp0 >= tmp1 ? 1 : 0;\n";
ss << " return tmp;\n";
ss << "}\n";
}
}}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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