luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2025-09-06 16:08:43 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add the init_by_array functionality from the reference implementation of

Browse Source 
Fri Dec 19 11:49:21 2003  George Lebl <jirka@5z.com>

        * glib/grand.c
          glib/grand.h (g_rand_new) (g_rand_new_with_seed)
          (g_rand_new_with_seed_array) (g_rand_set_seed_array):  Add
          the init_by_array functionality from the reference implementation
          of the mersenne twister (mt19937ar.c) and change the naming
          to fit with the rest of the grand API.  New functions are
          g_rand_new_with_seed_array, g_rand_set_seed_array.  This is only
          reliable/tested for the 2.2 version of the seeding as that's what
          the reference implementation uses.  Also modify g_rand_new to
          get 4 longs from /dev/urandom since that will always be available
          anyway and we get more entropy and if /dev/urandom is unavailable
          use also 4 longs for seeding using secs, usecs, getpid and getppid.
          For version 2.0 use only a simple seed again but be more careful
          about seeding with secs/usecs in this case.

        * glib/grand.c
          glib/grand.h (g_rand_copy):  Add g_rand_copy function to copy the
          current state of the random number generator.

        * glib/grand.c (g_rand_new):  Add testing for EINTR when reading
          from /dev/urandom

        * tests/rand-test.c: add testing of the array seeding stuff against
          the reference implementation, plus add statistical sanity check
          to see that the values outputted are truly kind of random.  And
          check that g_rand_copy truly copies the state by checking a few
          terms.
This commit is contained in:
George Lebl
2004-01-10 01:38:55 +00:00
committed by Tim Janik
parent 43da83fdae
commit 80591652ff
9 changed files with 376 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
ChangeLog
View File

@@ -1,3 +1,33 @@
Fri Dec 19 11:49:21 2003 George Lebl <jirka@5z.com>
* glib/grand.c
glib/grand.h (g_rand_new) (g_rand_new_with_seed)
(g_rand_new_with_seed_array) (g_rand_set_seed_array): Add
the init_by_array functionality from the reference implementation
of the mersenne twister (mt19937ar.c) and change the naming
to fit with the rest of the grand API. New functions are
g_rand_new_with_seed_array, g_rand_set_seed_array. This is only
reliable/tested for the 2.2 version of the seeding as that's what
the reference implementation uses. Also modify g_rand_new to
get 4 longs from /dev/urandom since that will always be available
anyway and we get more entropy and if /dev/urandom is unavailable
use also 4 longs for seeding using secs, usecs, getpid and getppid.
For version 2.0 use only a simple seed again but be more careful
about seeding with secs/usecs in this case.
* glib/grand.c
glib/grand.h (g_rand_copy): Add g_rand_copy function to copy the
current state of the random number generator.
* glib/grand.c (g_rand_new): Add testing for EINTR when reading
from /dev/urandom
* tests/rand-test.c: add testing of the array seeding stuff against
the reference implementation, plus add statistical sanity check
to see that the values outputted are truly kind of random. And
check that g_rand_copy truly copies the state by checking a few
terms.
Tue Jan 6 15:38:30 2004 Owen Taylor <otaylor@redhat.com>
* glib/gutils.h: Check defined (__OPTIMIZE__) not