diff options
Diffstat (limited to 'NaiveFFT/fft.c')
| -rw-r--r-- | NaiveFFT/fft.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/NaiveFFT/fft.c b/NaiveFFT/fft.c index cfcf3fa..b4c7d33 100644 --- a/NaiveFFT/fft.c +++ b/NaiveFFT/fft.c @@ -11,7 +11,7 @@ //calc the fft -void fft_if(double *x_i, double *x_q, int n, int inv) { +void KEEPALIVE fft_if(double *x_i, double *x_q, int n, int inv) { int i=0,j=0,k=0,m=0, irem=0, sign; double tq,ti; @@ -109,7 +109,7 @@ void fft_if(double *x_i, double *x_q, int n, int inv) { #define complex_mul_re(a_re, a_im, b_re, b_im) (a_re * b_re - a_im * b_im) #define complex_mul_im(a_re, a_im, b_re, b_im) (a_re * b_im + a_im * b_re) //https://github.com/rshuston/FFT-C/blob/master/libfft/fft.c -void ffti_shuffle_1(double *x_i, double *x_q, uint64_t n) { +void KEEPALIVE ffti_shuffle_1(double *x_i, double *x_q, uint64_t n) { int Nd2 = n>>1; int Nm1 = n-1; int i,j; @@ -156,7 +156,7 @@ void ffti_shuffle_1(double *x_i, double *x_q, uint64_t n) { j ^= bits; } } -void fft_1(double *x_i, double *x_q, uint64_t n, uint64_t inv) { +void KEEPALIVE fft_1(double *x_i, double *x_q, uint64_t n, uint64_t inv) { uint64_t n_log2; uint64_t r; uint64_t m, md2; @@ -225,7 +225,7 @@ void fft_1(double *x_i, double *x_q, uint64_t n, uint64_t inv) { } //dft works fine -void dft(double *x_i, double *x_q, int n, int inv) { +void KEEPALIVE dft(double *x_i, double *x_q, int n, int inv) { double Wn,Wk; //static array //double Xi[DATA_SIZE],Xq[DATA_SIZE]; |