为什么我的程序在读取/写入文件时丢掉最重要的数字？

我正在编写两个函数来将4维矢量保存到文件中，然后将矢量读回到文件中。

void saveLayer(string filename, int layer){
    ofstream ofile(filename, ios::out | ios::trunc);
    vector<vector<vector<vector<double>>>> oweights(layers[layer]->weights);
    for(vector<vector<vector<double>>> stratg:oweights){
        for(vector<vector<double>>layeri:stratg){
            for(vector<double> neuronq:layeri){
                for(double q:neuronq){
                    ofile<<setprecision(15)<<q;
                }
            }
        }
    }
    vector<vector<vector<double>>> obiases=layers[layer]->biases;
    for(vector<vector<double>>z:obiases){
        for(vector<double> w:z){
            for(double q:w){
                ofile<<setprecision(15)<<q;
            }
        }
    }
    ofile.close();
}

void loadLayer(string filename, int nS, vector<int> layerStruct){
    vector<vector<vector<vector<double>>>> newWeights;
    vector<vector<vector<double>>> newBiases;
    ifstream ifile(filename, ios::in);
    for(int i=0; i<nS; i++){
        vector<vector<vector<double>>> netWeights;
        for(int z=1; z<layerStruct.size(); z++){
            vector<vector<double>> layerWeights;
            for(int x=0; x<layerStruct[z]; x++){
                vector<double> neuronWeights;
                for(int y=0; y<layerStruct[z-1]; y++){
                    double w;
                    ifile>>w;
                    neuronWeights.push_back(w);
                }
                layerWeights.push_back(neuronWeights);
            }
            netWeights.push_back(layerWeights);
        }
        newWeights.push_back(netWeights);
    }
    for(int i=0; i<nS; i++){
        vector<vector<double>> netBiases;
        for(int z=1; z<layerStruct.size(); z++){
            vector<double> layerBiases;
            for(int x=0; x<layerStruct[z]; x++){
                double neuronBias;
                ifile>>neuronBias;
                layerBiases.push_back(neuronBias);
            }
            netBiases.push_back(layerBiases);
        }
        newBiases.push_back(netBiases);
    }
    layers[0]->numStrats=nS;
    layers[0]->weights=newWeights;
    layers[0]->biases=newBiases;
    ifile.close();
}

我的问题是，当应该写入或读取例如1.2345时，它将读取或写入0.2345，从而删除了最高有效数字。我不知道问题是否出在保存或加载功能上。我会很感激对此的任何解释。