在Visual Studio 2010中的C ++中使用lapack C标头错误 [英] errors using lapack C header in C++ with visual studio 2010
问题描述
请帮助我!我花了几个小时才能上网查找,但还没有找到解决方法....
Please help me! It takes me hours to look up in the internet and I haven't found a solution....
我正在尝试使用C++
函数中的call lapack函数,但一开始我就失败了.这是我的代码:
I am trying to use the call lapack function from C++
functions but I failed at the very beginning. Here is my code:
#include "stdafx.h"
#include "targetver.h"
extern "C" {
#include "lapacke.h"
}
int main{}
{
return 0;
}
我知道"lapacke.h"是C头,因此我使用extern "C"
子句.但是,当我尝试编译这个琐碎的函数时,出现以下错误:
I know "lapacke.h" is a C header so I use the extern "C"
clause. But while I try to compile this trivial function, I have the following error:
Error 1 error C2146: syntax error : missing ';' before identifier 'lapack_make_complex_float' c:\users\svd_example1\example2\example2\lapacke.h 89 1 example2
Error 2 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\svd_example1\example2\example2\lapacke.h 89 1 example2
有人知道导致这些错误的原因吗?
Does anyone know what caused these errors?
非常感谢!
推荐答案
标头的相关部分是:
/* Complex types are structures equivalent to the
* Fortran complex types COMPLEX(4) and COMPLEX(8).
*
* One can also redefine the types with his own types
* for example by including in the code definitions like
*
* #define lapack_complex_float std::complex<float>
* #define lapack_complex_double std::complex<double>
*
* or define these types in the command line:
*
* -Dlapack_complex_float="std::complex<float>"
* -Dlapack_complex_double="std::complex<double>"
*/
/* Complex type (single precision) */
#ifndef lapack_complex_float
#include <complex.h>
#define lapack_complex_float float _Complex
#endif
/* ... */
lapack_complex_float lapack_make_complex_float( float re, float im );
这默认情况下使用C99 _Complex
,Visual C ++不支持.您可以根据建议定义这些宏,以改为使用std::complex
,而Visual C ++支持这些宏:
This uses C99 _Complex
by default, which Visual C++ doesn't support. You can define those macros as suggested to use std::complex
instead, which are supported by Visual C++:
#include <complex>
#define lapack_complex_float std::complex<float>
#define lapack_complex_double std::complex<double>
#include "lapacke.h"
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