Eigen error C2039: “THIS_FUNCTION_IS_NOT_FOR_INTEGER_NUMERIC_TYPES”: 不是“Eigen::internal::static_asse

最新推荐文章于 2024-01-14 11:40:01 发布

wanghong2016

最新推荐文章于 2024-01-14 11:40:01 发布

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本文链接：https://blog.youkuaiyun.com/wanghong2016/article/details/77988820

本文介绍了一个使用Eigen库求解整数型矩阵逆时遇到的编译错误，并通过将整数类型改为浮点数类型成功解决问题的过程。

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使用Eigen求矩阵的逆，代码如下：

int array[ 9][ 9] = {
0,0,0,1,1,0,1,0,1,
0,1,1,0,1,0,1,1,1,
0,1,0,1,0,0,1,1,0,
1,1,0,1,0,1,0,0,1,
0,1,0,1,1,0,1,1,1,
0,1,0,1,0,1,0,0,0,
0,0,0,1,1,0,0,0,0,
1,1,0,1,0,1,0,0,0,
0,1,0,1,1,0,1,0,0
};

Matrix< int , 9, 9> m = Map< Matrix< int , 9, 9> >( ( int* )array );

Matrix< int , 9, 9> n = m.inverse();

编译时提示错误error C2039: “THIS_FUNCTION_IS_NOT_FOR_INTEGER_NUMERIC_TYPES”: 不是“Eigen::internal::static_assertion<condition>”的成员。

将int类型改成double,

double array[ 9][ 9] = {
0,0,0,1,1,0,1,0,1,
0,1,1,0,1,0,1,1,1,
0,1,0,1,0,0,1,1,0,
1,1,0,1,0,1,0,0,1,
0,1,0,1,1,0,1,1,1,
0,1,0,1,0,1,0,0,0,
0,0,0,1,1,0,0,0,0,
1,1,0,1,0,1,0,0,0,
0,1,0,1,1,0,1,0,0
};

Matrix< double, 9, 9> m = Map< Matrix< double, 9, 9> >( ( double* )array );

Matrix< double, 9, 9> n = m.inverse();