Functions | |
double | second () |
Actual used CPU time in seconds. | |
int | next_power_of_2 (int N) |
Computes /f$n N/f$ such that /f$n=2^j,\, j{N}_0/f$. | |
void | next_power_of_2_exp (int N, int *N2, int *t) |
Computes /f$n N/f$ such that /f$n=2^j,\, j{N}_0/f$. | |
int | nfft_prod_int (int *vec, int d) |
Computes integer /f${t=0}^{d-1} v_t/f$. | |
int | nfct_prod_int (int *vec, int d) |
Computes integer /f${t=0}^{d-1} v_t/f$. | |
int | nfst_prod_minus_a_int (int *vec, int a, int d) |
Computes integer /f${t=0}^{d-1} v_t-a/f$. | |
int | nfft_plain_loop (int *idx, int *N, int d) |
Computes /f${t=0}^{d-1} i_t {t'=t+1}^{d-1} N_{t'}/f$. | |
double | nfft_prod_real (double *vec, int d) |
Computes double /f${t=0}^{d-1} v_t/f$. |
for timing, ...
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Actual used CPU time in seconds. Calls getrusage, limited accuracy |