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93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include "liblte/phy/phy.h"
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typedef _Complex float cf_t;
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int main(int argc, char **argv) {
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uint32_t N = 1000; // Number of sinwave samples
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interp_t interp;
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struct timeval t[3];
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if (argc < 3) {
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printf("usage: %s upsampling_rate nof_trials\n", argv[0]);
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exit(-1);
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}
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uint32_t M = atoi(argv[1]);
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uint32_t nof_trials = atoi(argv[2]);
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if (interp_init(&interp, LINEAR, N, M)) {
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exit(-1);
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}
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cf_t *in = vec_malloc(N*sizeof(cf_t));
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if(!in) {
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perror("malloc");
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exit(-1);
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}
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cf_t *out = vec_malloc(M * N*sizeof(cf_t));
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if(!out) {
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perror("malloc");
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exit(-1);
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}
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cf_t *out_volk = vec_malloc(M * N*sizeof(cf_t));
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if(!out_volk) {
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perror("malloc");
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exit(-1);
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}
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srand(time(NULL));
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for(uint32_t i=0;i<N;i++) {
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//in[i] = sin((float) i*2*M_PI/N)+10*I*cos((float) i*2*M_PI/N);
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in[i] = (float) rand()/RAND_MAX-0.5 + ((float) rand()/RAND_MAX - 0.5) * I;
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}
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uint32_t exec_normal, exec_volk;
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float mean_normal=0, mean_volk=0;
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bzero(out_volk, M * N*sizeof(cf_t));
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bzero(out, M * N*sizeof(cf_t));
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for (int n=0;n<nof_trials;n++) {
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gettimeofday(&t[1], NULL);
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interp_linear_c(in, out, M, N);
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gettimeofday(&t[2], NULL);
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get_time_interval(t);
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exec_normal = t[0].tv_usec;
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gettimeofday(&t[1], NULL);
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interp_run(&interp, in, out_volk);
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gettimeofday(&t[2], NULL);
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get_time_interval(t);
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exec_volk = t[0].tv_usec;
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if (n == 0) {
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exec_volk = 0;
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}
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mean_normal = (mean_normal + exec_normal * n) / (n+1);
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mean_volk = (mean_volk + exec_volk * n) / (n+1);
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}
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// Check interp values
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float diff = 0.0;
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for(int i=0;i<N*M;i++){
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diff += cabsf(out_volk[i] - out[i])/N/M;
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}
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printf("%d: error=%f Exec: %f - %f\n", M, diff, mean_normal, mean_volk);
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free(in);
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free(out);
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free(out_volk);
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interp_free(&interp);
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printf("Ok\n");
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exit(0);
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}
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