thing_sort.c

快速傅立叶变换程序代码,学信号的同学,可要注意了

#include "thing_sort.h"
int cmp_thing ( const void *a , const void *b ) {
  const thing *ma = (const thing*)a ;
  const thing *mb = (const thing*)b ;
  return ( ( ma->val - mb->val ) ) ; 
}