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Diffstat (limited to '')
-rw-r--r-- | netem/pareto.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/netem/pareto.c b/netem/pareto.c new file mode 100644 index 0000000..51d9437 --- /dev/null +++ b/netem/pareto.c @@ -0,0 +1,41 @@ +/* + * Pareto distribution table generator + * Taken from the uncopyrighted NISTnet code. + */ +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <limits.h> + +#include <linux/types.h> +#include <linux/pkt_sched.h> + +static const double a=3.0; +#define TABLESIZE 16384 +#define TABLEFACTOR NETEM_DIST_SCALE + +int +main(int argc, char **argv) +{ + int i, n; + double dvalue; + + printf("# This is the distribution table for the pareto distribution.\n"); + + for (i = 65536, n = 0; i > 0; i -= 16) { + dvalue = (double)i/(double)65536; + dvalue = 1.0/pow(dvalue, 1.0/a); + dvalue -= 1.5; + dvalue *= (4.0/3.0)*(double)TABLEFACTOR; + if (dvalue > 32767) + dvalue = 32767; + + printf(" %d", (int)rint(dvalue)); + if (++n == 8) { + putchar('\n'); + n = 0; + } + } + + return 0; +} |