所以我用 Eigen 编写了一个简单的张量,如下所示:
#define _USE_MATH_DEFINES
#include <iostream>
#include <cmath>
#include <Eigen/Dense>
#include <unsupported/Eigen/CXX11/Tensor>
using namespace Eigen;
using namespace std;
int main () {
Tensor<double, 3> A(4,5,6); // 3 dimensions (4x5x6)
A.setZero();
A(0,1,2) = 1.7;
A(1,2,2) = -1.5;
cout<<A(1,2,2)<<endl;
return 0;
}
但后来我收到以下错误,我环顾互联网寻求帮助,但遗憾的是我仍然一无所知。我总是在使用更高级的代码时遇到此错误,因此我决定编写一个小代码,以便在出现此错误时进行测试。注意:当我对 Eigen 矩阵执行相同操作时,我没有收到此错误。只有当我更改为张量时,才会出现此错误。然后我把它改回矩阵,我现在不知何故得到了同样的错误?但是,即使在我更高级的代码中,我什至没有任何张量,但由于某种原因仍然会出现此错误。有人可以帮助我,因为这让我发疯了吗?
C:\WINDOWS\system32\cmd.exe /C C:/MinGW/bin/mingw32-make.exe -j4 SHELL=cmd.exe -e -f Makefile
"----------Building project:[ Test - Debug ]----------"
mingw32-make.exe[1]: Entering directory 'C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test'
mingw32-make.exe[1]: Leaving directory 'C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test'
mingw32-make.exe[1]: Entering directory 'C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test'
C:/MinGW/bin/g++.exe -c "C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test/main.cpp" -std=c++14 -Wall -g -O0 -Wall -o ./Debug/main.cpp.o -I. -I"C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\eigen-3.3.9" -I"C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\Halton" -I"C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\quasimvnrnd" -I"C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\dirent\dirent-master\include"
In file included from C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test/main.cpp:5:
C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\eigen-3.3.9/unsupported/Eigen/CXX11/Tensor:53:17: error: conflicting declaration 'typedef long int int32_t'
typedef __int32 int32_t;
^~~~~~~
In file included from c:\mingw\lib\gcc\mingw32\8.2.0\include\stdint.h:9,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\cstdint:41,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\bits\char_traits.h:501,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\ios:40,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\ostream:38,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\iostream:39,
from C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test/main.cpp:2:
c:\mingw\include\stdint.h:62:15: note: previous declaration as 'typedef int int32_t'
typedef int int32_t;
^~~~~~~
In file included from C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test/main.cpp:5:
C:\Users\RS3\Desktop\SCC HiWi\Code\C++\myGmm\UQ\eigen-3.3.9/unsupported/Eigen/CXX11/Tensor:54:26: error: conflicting declaration 'typedef long unsigned int uint32_t'
typedef unsigned __int32 uint32_t;
^~~~~~~~
In file included from c:\mingw\lib\gcc\mingw32\8.2.0\include\stdint.h:9,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\cstdint:41,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\bits\char_traits.h:501,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\ios:40,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\ostream:38,
from c:\mingw\lib\gcc\mingw32\8.2.0\include\c++\iostream:39,
from C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test/main.cpp:2:
c:\mingw\include\stdint.h:63:19: note: previous declaration as 'typedef unsigned int uint32_t'
typedef unsigned uint32_t;
^~~~~~~~
mingw32-make.exe[1]: *** [Debug/main.cpp.o] Error 1
Test.mk:97: recipe for target 'Debug/main.cpp.o' failed
mingw32-make.exe[1]: Leaving directory 'C:/Users/RS3/Desktop/SCC HiWi/Code/C++/myGmm/UQ/Test'
mingw32-make.exe: *** [All] Error 2
Makefile:4: recipe for target 'All' failed
====1 errors, 4 warnings====
更新:当我删除最后一个包含并再次执行特征矩阵时,没有问题。所以问题在于最后一个包含。但没有它,我无法使用张量。我应该怎么做才能在没有错误的情况下使用张量?
答案 0 :(得分:1)
您能告诉我们您的 MinGW 版本来自哪里吗?
问题是您的 MinGW 版本显然将 __int32
定义为 long
,而将 int32_t
定义为 int
,从而导致类型冲突。我们在 Tensor 模块中有一些代码来确保在 Windows 上始终定义 int32_t
,因为 2010 年之前的 Visual Studio 实际上不提供 stdint.h
标头。我们以前从未见过这会导致问题。我尝试了多个版本的 MinGW,包括 32 位和 64 位,但在我迄今为止尝试过的所有版本中,__int32
始终是 int
。
我在这里的主分支上有一个潜在的修复程序:!373。合并后,我们可以将更改向后移植到稳定的 3.3 分支。
如果您只想启动并运行某些东西,您可以尝试安装不同版本的 MinGW。