请帮帮我!在互联网上查询需要几个小时,我还没有找到解决方案......
我正在尝试使用来自C++
函数的call lapack函数,但是我在一开始就失败了。这是我的代码:
#include "stdafx.h"
#include "targetver.h"
extern "C" {
#include "lapacke.h"
}
int main{}
{
return 0;
}
我知道“lapacke.h”是一个C头,所以我使用了extern "C"
子句。但是当我尝试编译这个简单的函数时,我有以下错误:
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
有谁知道导致这些错误的原因?
非常感谢!
答案 0 :(得分:6)
标题的相关部分是:
/* 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 );
默认使用C99 _Complex
,Visual C ++不支持。您可以按照建议使用std::complex
来定义这些宏,这些宏由Visual C ++支持:
#include <complex>
#define lapack_complex_float std::complex<float>
#define lapack_complex_double std::complex<double>
#include "lapacke.h"