我正在尝试从 lapack lib 调用 F77_NAME(dgeqrf) 函数,但程序崩溃了。你觉得有什么问题吗?
#include <stdio.h>
#include <R.h>
#include <R_ext/BLAS.h>
#include <R_ext/Lapack.h>
double* getcopy(int* nrow, int* ncol,double* a)
{
double* copy = malloc(*nrow**ncol*sizeof(double));
int i;
for(i=0;i<*nrow**ncol;i++)
{
copy[i] = a[i];
}
return copy;
}
int main() {
int m=3,n=3;
double a[] = {12,-51,4,6,167,-68,-4,24,-41};
double* acopy = getcopy(&m,&n,a);
double tau[3];
int info=0;
int i;
int one=1;
double* work = malloc(max(&one,&m)*sizeof(double));
int lwork = 0;
int lda = max(&m,&n);
F77_NAME(dgeqrf)(&m,&n,acopy,&m,tau,work,&lwork,&info);
for(i=0;i<m*n;i++)
printf("%f",acopy[i]);
return 0;
}