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jamie@140
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1 /* FFT functions */
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jamie@140
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2 void cdft(int n, int isgn, double *a, int *ip, double *w);
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jamie@140
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3 void rdft(int n, int isgn, double *a, int *ip, double *w);
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jamie@140
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4 void ddct(int n, int isgn, double *a, int *ip, double *w);
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jamie@140
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5 void ddst(int n, int isgn, double *a, int *ip, double *w);
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jamie@140
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6 void dfct(int n, double *a, double *t, int *ip, double *w);
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jamie@140
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7 void dfst(int n, double *a, double *t, int *ip, double *w);
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jamie@140
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8
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jamie@140
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9 /* Auxiliary functions */
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jamie@140
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10 void makewt(int nw, int *ip, double *w);
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jamie@140
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11 void bitrv2(int n, int *ip, double *a);
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jamie@140
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12 void bitrv2conj(int n, int *ip, double *a);
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jamie@140
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13 void cftfsub(int n, double *a, double *w);
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jamie@140
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14 void cftbsub(int n, double *a, double *w);
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jamie@140
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15 void makect(int nc, int *ip, double *c);
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jamie@140
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16 void rftfsub(int n, double *a, int nc, double *c);
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jamie@140
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17 void rftbsub(int n, double *a, int nc, double *c);
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jamie@140
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18 void dctsub(int n, double *a, int nc, double *c);
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jamie@140
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19 void dstsub(int n, double *a, int nc, double *c);
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jamie@140
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20 void cft1st(int n, double *a, double *w);
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jamie@140
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21 void cftmdl(int n, int l, double *a, double *w);
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