thanks for your help, Edward. I fixed the problem by creating a new project ^_^
best regards！ -----原始邮件----- 发件人:"Edward Lam" <[email protected]> 发送时间:2021-07-09 20:34:08 (星期五) 收件人: [email protected] 抄送: 主题: Re: Re: [eigen] dense matrix multiplication On Fri, Jul 9, 2021 at 4:20 AM 张瑞 <[email protected]> wrote: thanks for your reply, I tried to add the code #define EIGEN_USE_BLAS, but it still doesn't work. As mentioned at https://eigen.tuxfamily.org/dox/TopicUsingBlasLapack.html, EIGEN_USE_BLAS enables the use of external BLAS, which means it needs additional libraries. To use Eigen's internal math backend, you need to NOT define any of the macros listed at that URL. Best regards, -Edward
