1 /* 2 Copyright(C) 1996-1999 Takuya OOURA 3 email: ooura@mmm.t.u-tokyo.ac.jp 4 download: http://momonga.t.u-tokyo.ac.jp/~ooura/fft.html 5 You may use, copy, modify this code for any purpose and 6 without fee. You may distribute this ORIGINAL package. 7 */ 8 extern void cdft(int, int, float *, int *, float *); 9 extern void rdft(int, int, float *, int *, float *); 10 extern void ddct(int, int, float *, int *, float *); 11 extern void ddst(int, int, float *, int *, float *); 12 extern void dfct(int, float *, float *, int *, float *); 13 extern void dfst(int, float *, float *, int *, float *); 14