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authorRusty Russell <rusty@rustcorp.com.au>2011-06-20 16:54:15 +0930
committerRusty Russell <rusty@rustcorp.com.au>2011-06-20 11:18:34 +0200
commit754c677b0bbf3ea6c7d2a73c93848f1b0d68c91e (patch)
tree54d99c9f66d5a57bf7f70d53e744a31df18f9e0e /lib/ccan/tally/_info
parenta8c3d38bc806c6972d10b6a371de8941da25a9ae (diff)
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lib: import ccan modules for tdb2
Imported from git://git.ozlabs.org/~ccan/ccan init-1161-g661d41f Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'lib/ccan/tally/_info')
-rw-r--r--lib/ccan/tally/_info58
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/ccan/tally/_info b/lib/ccan/tally/_info
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+#include <stdio.h>
+#include <string.h>
+#include "config.h"
+
+/**
+ * tally - running tally of integers
+ *
+ * The tally module implements simple analysis of a stream of integers.
+ * Numbers are fed in via tally_add(), and then the mean, median, mode and
+ * a histogram can be read out.
+ *
+ * Example:
+ * #include <stdio.h>
+ * #include <err.h>
+ * #include <ccan/tally/tally.h>
+ *
+ * int main(int argc, char *argv[])
+ * {
+ * struct tally *t;
+ * unsigned int i;
+ * size_t err;
+ * ssize_t val;
+ * char *histogram;
+ *
+ * if (argc < 2)
+ * errx(1, "Usage: %s <number>...\n", argv[0]);
+ *
+ * t = tally_new(100);
+ * for (i = 1; i < argc; i++)
+ * tally_add(t, atol(argv[i]));
+ *
+ * printf("Mean = %zi\n", tally_mean(t));
+ * val = tally_approx_median(t, &err);
+ * printf("Median = %zi (+/- %zu)\n", val, err);
+ * val = tally_approx_mode(t, &err);
+ * printf("Mode = %zi (+/- %zu)\n", val, err);
+ * histogram = tally_histogram(t, 50, 10);
+ * printf("Histogram:\n%s", histogram);
+ * free(histogram);
+ * return 0;
+ * }
+ *
+ * License: LGPL (3 or any later version)
+ * Author: Rusty Russell <rusty@rustcorp.com.au>
+ */
+int main(int argc, char *argv[])
+{
+ if (argc != 2)
+ return 1;
+
+ if (strcmp(argv[1], "depends") == 0) {
+ printf("ccan/build_assert\n");
+ printf("ccan/likely\n");
+ return 0;
+ }
+
+ return 1;
+}