当前位置: 首页>>代码示例>>C++>>正文


C++ fstream::precision方法代码示例

本文整理汇总了C++中std::fstream::precision方法的典型用法代码示例。如果您正苦于以下问题:C++ fstream::precision方法的具体用法?C++ fstream::precision怎么用?C++ fstream::precision使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在std::fstream的用法示例。


在下文中一共展示了fstream::precision方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: write_coordinates

void Writer::write_coordinates(std::fstream& file)
{
  // set precision for Real
  Uint prec = file.precision();
  file.precision(8);

  // Assemble a list of all the coordinates that are used in this mesh
  const boost::shared_ptr< common::List<Uint> > used_nodes_ptr = build_used_nodes_list(m_filtered_entities,m_mesh->geometry_fields(),m_enable_overlap);
  const common::List<Uint>& used_nodes = *used_nodes_ptr;

  // Create a mapping between the actual node-numbering in the mesh, and the node-numbering to be written
  const Uint nb_nodes = used_nodes.size();

  file << "$Nodes\n";
  file << nb_nodes << "\n";

  const Uint nb_dim = m_mesh->dimension();
  const Dictionary& geometry = m_mesh->geometry_fields();
  const common::Table<Real>& coordinates = geometry.coordinates();
  boost_foreach( const Uint node, used_nodes.array())
  {
    common::Table<Real>::ConstRow coord = coordinates[node];
    file << geometry.glb_idx()[node]+1 << " ";
    for (Uint d=0; d<3; d++)
    {
      if (d<nb_dim)
        file << coord[d] << " ";
      else
        file << 0 << " ";
    }
    file << "\n";
  }

  file << "$EndNodes\n";
  // restore precision
  file.precision(prec);
}
开发者ID:ddeconinck,项目名称:coolfluid3,代码行数:37,代码来源:Writer.cpp

示例2: OutputLegacyVPCF

void OutputLegacyVPCF(const KeyValues& DataBlock, std::fstream& f, const std::string& szOutputName)
{
    std::fstream out;
    out.open(szOutputName, ios::out);
    if (!out.is_open())
        throw std::string("Could not open file \"" + szOutputName + "\" for writing.");

    f.precision(6);
    out << "<!-- schema text{7e125a45-3d83-4043-b292-9e24f8ef27b4} generic {198980d8-3a93-4919-b4c6-dd1fb07a3a4b} -->\n\n";
    out << "CParticleSystemDefinition CParticleSystemDefinition_0\n{\n";
    for (uint32_t i = 0; i < DataBlock.size; ++i)
    {
        uint16_t nDataType = *(uint16_t*)(&DataBlock.name[i][strlen(DataBlock.name[i]) + 1]);

        out << "\t";
        if ((!OutputVPCFTypeData(out, DataBlock, i)) && (nDataType == KV_DATA_TYPE_STRUCT))
        {
            out.seekp(-1, ios::cur);
            if (strncmp(DataBlock.name[i], "m_Children\0", 11) == 0)
            {
                KeyValues* pChildren = (KeyValues*)DataBlock.data[i];
                out << "\tParticleChildrenInfo_t[] m_Children =\n\t[\n";
                for (uint32_t j = 0; j < pChildren->size; ++j)
                {
                    out << "\t\t" << pChildren->name[j] << "\n\t\t{\n";
                    KeyValues* pChild = (KeyValues*)pChildren->data[j];
                    for (uint32_t k = 0; k < pChild->size; ++k)
                    {
                        out << "\t\t\t";
                        OutputVPCFTypeData(out, *pChild, k);
                    }
                    out << "\t\t}" << ((j == pChildren->size - 1) ? "\n" : ",\n");
                }
                out << "\t]\n";
            }
            else
            {
                KeyValues* pOperators = (KeyValues*)DataBlock.data[i];
                out << "\tCParticleOperator*[] " << DataBlock.name[i] << " =\n\t[\n";
                for (uint32_t j = 0; j < pOperators->size; ++j)
                {
                    KeyValues* pOperator = (KeyValues*)pOperators->data[j];
                    out << "\t\t&" << pOperator->name[0] << "_" << j << ((j < pOperators->size - 1) ? ",\n" : "\n");
                }
                out << "\t]\n";
            }
        }
    }
    out << "}\n";


    for (uint32_t i = 0; i < DataBlock.size; ++i)
    {
        uint16_t nDataType = *(uint16_t*)(&DataBlock.name[i][strlen(DataBlock.name[i]) + 1]);
        if ((nDataType == KV_DATA_TYPE_STRUCT) && (strncmp(DataBlock.name[i], "m_Children\0", 11) != 0))
        {
            KeyValues* pOperators = (KeyValues*)DataBlock.data[i];
            for (uint32_t j = 0; j < pOperators->size; ++j)
            {
                KeyValues* pOperator = (KeyValues*)pOperators->data[j];
                KeyValues* pOperatorData = (KeyValues*)pOperator->data[0];
                out << "\n" << pOperator->name[0] << " " << pOperator->name[0] << "_" << j << "\n{\n";

                bool bLastOutputSuccess = true;
                for (uint32_t k = 0; k < pOperatorData->size; ++k)
                {
                    if (bLastOutputSuccess)
                        out << "\t";
                    bLastOutputSuccess = OutputVPCFTypeData(out, *pOperatorData, k);
                }
                out << "}\n";
            }
        }
    }
    out.close();
}
开发者ID:Avatarchik,项目名称:Source-2-Decompiler,代码行数:76,代码来源:vpcf.cpp


注:本文中的std::fstream::precision方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。