C++ (Cpp) polar_to_complex Examples

Example #1

File: fft.c Project: Strongc/playasa

int fft(const double *x, const int N, Complex *X){

    Complex *twiddle_factors = (Complex*)malloc(sizeof(Complex)*(N/2));
    Complex *Xt = (Complex*)malloc(sizeof(Complex)*(N));
    int k;
    for (k=0;k<N/2;k++){
	twiddle_factors[k] = polar_to_complex(1.0, 2.0*PI*k/N);
    }
    fft_calc(N, x, X, Xt, 1, twiddle_factors);

    free(twiddle_factors);
    free(Xt);

    return 0;

}

Example #2

File: ph_fft.c Project: Paxa/node-phash

int fft(double *x, int N, complex double *X)
{

    complex double *twiddle_factors = (complex double*)malloc(sizeof(complex double)*(N/2));
    complex double *Xt = (complex double*)malloc(sizeof(complex double)*N);

    int k;
    for (k=0;k<N/2;k++){
	twiddle_factors[k] = polar_to_complex(1.0, 2.0*PI*k/N);
    }
    fft_calc(N, x, X, Xt, 1, twiddle_factors);

    free(twiddle_factors);
    free(Xt);

    return 0;

}