sa_common.c: Update comment in code

Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>

diff --git a/sa_common.c b/sa_common.c
index a4131e23665f8c8e1dc447d26313f52c066669ec..c1a8d154a0a86f15ac8d8fa6544eb2608a92ce39 100644 (file)
--- a/sa_common.c
+++ b/sa_common.c
@@ -570,15 +570,11 @@ int next_slice(unsigned long long uptime_ref, unsigned long long uptime,
        /*
         * A few notes about the "algorithm" used here to display selected entries
         * from the system activity file (option -f with -i flag):
-        * Let 'Iu' be the interval value given by the user on the command line,
-        *     'If' the interval between current and previous line in the system
-        * activity file,
-        * and 'En' the nth entry (identified by its time stamp) of the file.
-        * We choose In = [ En - If/2, En + If/2 [ if If is even,
-        *        or In = [ En - If/2, En + If/2 ] if not.
-        * En will be displayed if
-        *       (Pn * Iu) or (P'n * Iu) belongs to In
-        * with  Pn = En / Iu and P'n = En / Iu + 1
+        * Let Iu be the interval value given by the user on the command line,
+        *     In the interval between current and previous sample,
+        * and En the current sample (identified by its time stamp) in the file.
+        * En will ne displayed if there is an integer p so that:
+        * p * Iu belongs to [En - In/2, En + In/2[.
         */
        f = ((double) ((uptime - uptime_ref) & 0xffffffff)) / 100;
        entry = (unsigned long) f;