该代码采用c5400dsp的汇编语言和c语言实现快速傅立叶变换，经过实际测试，效果很好，可以支持64、128、256点的fft-c5400dsp of assembly language and c Language Fast Fourier Transform, after the actual test, a good effect, and can support 64,128,256 point fft
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000989s ]
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:0.085270s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001043s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001245s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001306s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003527s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000898s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004798s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019853s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001467s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 108160 [ RunTime:0.011309s ]
