Rename: tc/normal.c -> netem/normal.c
(Logical change 1.141)
diff --git a/netem/normal.c b/netem/normal.c
index e69de29..e6683db 100644
--- a/netem/normal.c
+++ b/netem/normal.c
@@ -0,0 +1,56 @@
+/*
+ * Normal distribution table generator
+ * Taken from the uncopyrighted NISTnet code.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include <limits.h>
+
+#include <linux/types.h>
+#include <linux/pkt_sched.h>
+
+#define TABLESIZE 16384
+#define TABLEFACTOR NETEM_DIST_SCALE
+
+static double
+normal(double x, double mu, double sigma)
+{
+ return .5 + .5*erf((x-mu)/(sqrt(2.0)*sigma));
+}
+
+int
+main(int argc, char **argv)
+{
+ double x, *table;
+ int i, n;
+
+ table = calloc(sizeof(double), TABLESIZE+1);
+ if (!table) {
+ fprintf(stderr, "Not enough memory\n");
+ return 1;
+ }
+
+
+ for (x = -10.0; x < 10.05; x += .00005) {
+ i = (int)rint(TABLESIZE*normal(x, 0.0, 1.0));
+ table[i] = x;
+ }
+
+
+ printf("# This is the distribution table for the normal distribution.\n");
+ for (i = n = 0; i < TABLESIZE; i += 4) {
+ int value = (int) rint(table[i]*TABLEFACTOR);
+ if (value < SHRT_MIN) value = SHRT_MIN;
+ if (value > SHRT_MAX) value = SHRT_MAX;
+
+ printf(" %d", value);
+ if (++n == 8) {
+ putchar('\n');
+ n = 0;
+ }
+ }
+ free(table);
+ return 0;
+}