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wichmann_hill
2007 Sep 23
0
initial scrambling of seed in do_setseed / RNG_Init
...6,8 @@
BM_norm_keep = 0.0; /* zap Box-Muller history */
/* Initial scrambling */
- for(j = 0; j < 50; j++)
- seed = (69069 * seed + 1);
+ /* Equivalent to 50 iterations of seed = (69069 * seed + 1) */
+ seed = (1100682473U * seed + 2358491998U);
switch(kind) {
case WICHMANN_HILL:
case MARSAGLIA_MULTICARRY:
Let me add also the following remark. The help(Random.user) page says
Optionally, the user can supply the entry point 'user_unif_init',
which is called with an 'unsigned int' argument when 'RNGkind' (or
'set.seed') i...