csharp版常见数值计算源码，包括矩阵计算、插值、线性方程和非线性方程等-CSharp version of common-source numerical computation, including the matrix calculation, interpolation, linear equations and nonlinear equations, such as
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001451s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.094581s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000992s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001860s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001379s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.008311s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001145s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003773s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016358s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001054s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 315712 [ RunTime:0.013502s ]
