Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb'

[ffmpeg] / libavutil / lfg.c

diff --git a/libavutil/lfg.c b/libavutil/lfg.c
index 5ffd76f18155008867010a32addac551a4254995..08a4f678e2e89727c39ad8940f10b37a65dc3919 100644 (file)
--- a/libavutil/lfg.c
+++ b/libavutil/lfg.c
@@ -58,61 +58,3 @@ void av_bmg_get(AVLFG *lfg, double out[2])
     out[0] = x1 * w;
     out[1] = x2 * w;
 }
-
-#ifdef TEST
-#include "log.h"
-#include "timer.h"
-
-int main(void)
-{
-    int x = 0;
-    int i, j;
-    AVLFG state;
-
-    av_lfg_init(&state, 0xdeadbeef);
-    for (j = 0; j < 10000; j++) {
-        START_TIMER
-        for (i = 0; i < 624; i++) {
-            //av_log(NULL, AV_LOG_ERROR, "%X\n", av_lfg_get(&state));
-            x += av_lfg_get(&state);
-        }
-        STOP_TIMER("624 calls of av_lfg_get");
-    }
-    av_log(NULL, AV_LOG_ERROR, "final value:%X\n", x);
-
-    /* BMG usage example */
-    {
-        double mean   = 1000;
-        double stddev = 53;
-        double samp_mean = 0.0, samp_stddev = 0.0;
-        double samp0, samp1;
-
-        av_lfg_init(&state, 42);
-
-        for (i = 0; i < 1000; i += 2) {
-            double bmg_out[2];
-            av_bmg_get(&state, bmg_out);
-            samp0 = bmg_out[0] * stddev + mean;
-            samp1 = bmg_out[1] * stddev + mean;
-            samp_mean += samp0 + samp1;
-            samp_stddev += samp0 * samp0 + samp1 * samp1;
-            av_log(NULL, AV_LOG_INFO,
-                   "%f\n%f\n",
-                   samp0,
-                   samp1);
-        }
-        /* TODO: add proper normality test */
-        samp_mean /= 1000;
-        samp_stddev /= 999;
-        samp_stddev -= (1000.0/999.0)*samp_mean*samp_mean;
-        samp_stddev = sqrt(samp_stddev);
-        av_log(NULL, AV_LOG_INFO, "sample mean  : %f\n"
-                                  "true mean    : %f\n"
-                                  "sample stddev: %f\n"
-                                  "true stddev  : %f\n",
-                                   samp_mean, mean, samp_stddev, stddev);
-    }
-
-    return 0;
-}
-#endif