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61 lines
1.1 KiB
C++
61 lines
1.1 KiB
C++
/*
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* RightShift.cpp
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*
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* Created on: 2015年3月21日
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* Author: fasiondog
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*/
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#include "RightShift.h"
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#if HKU_SUPPORT_SERIALIZATION
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BOOST_CLASS_EXPORT(hku::RightShift)
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#endif
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namespace hku {
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RightShift::RightShift(): IndicatorImp("REF", 1) {
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setParam<int>("n", 1);
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}
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RightShift::~RightShift() {
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}
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bool RightShift::check() {
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int n = getParam<int>("n");
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if (n < 0) {
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HKU_ERROR("Invalid param! (n>=0) "
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<< m_params << " [RightShift::RightShift]");
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return false;
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}
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return true;
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}
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void RightShift::_calculate(const Indicator& data) {
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size_t total = data.size();
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int n = getParam<int>("n");
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m_discard = data.discard() + n;
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if (m_discard >= total) {
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m_discard = total;
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return;
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}
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for (size_t i = m_discard; i < total; ++i) {
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_set(data[i-n], i);
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}
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}
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Indicator HKU_API REF(int n) {
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IndicatorImpPtr p = make_shared<RightShift>();
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p->setParam<int>("n", n);
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return Indicator(p);
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}
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Indicator HKU_API REF(const Indicator& ind, int n) {
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return REF(n)(ind);
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}
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} /* namespace hku */
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