Author: Uri Blass
Date: 02:07:11 11/04/02
Go up one level in this thread
On November 04, 2002 at 04:59:03, Uri Blass wrote:
>On November 04, 2002 at 04:32:20, Severi Salminen wrote:
>
>>>I can see randomize when I click F1 only as a visual basic command and I work in
>>>C.
>>>
>>>I tried srand(0) before filling the array but it does not help and
>>>zobrist[0][0][0] is different in debug mode and in release mode.
>>
>>Are you sure? I think rand() should return the exact same values if you use the
>>same seed (srand()). Are you sure you run srand(0) and fill the table only once
>>in both versions? There seems to be a bug somewhere.
>>
>>Severi
>
>I do not know maybe the problem is that I use rand64 for 64 bits numbers
>
>Here is the beginning of my code
>
>int main(void)
>{
> char s[256];
> int i=0;
> char sizehash[9]="aaaaaaaaa";
> int hash_in_mbytes=0;
> FILE *hashfile=fopen("movei137info.txt", "r+t");
> int fil,j;
> srand(0);
> for (fil=0;fil<6;fil++)
> for (i=0;i<2;i++)
> for (j=0;j<64;j++)
> zobrist[fil][i][j]=rand64();
> printf(" %d ",(zobrist[0][0][0]&1048575));
>
>
>In debug mode I get 229414 and in release mode I get 172695.
>
>
>If I use rand instead of rand64 I get 38 in both cases
>Here is my function rand64 that is in another file in my project.
>
>__int64 rand64()
>{
> return rand()^((__int64)rand()<<15)^((__int64)rand()<<30)^
> ((__int64)rand()<<45)^((__int64)rand()<<60);
>}
>
>
>Uri
More information the fact that the function is in a different files change
nothing here
I tried transferring the function to the same file and even not using the
function but
having
for (fil=0;fil<6;fil++)
for (i=0;i<2;i++)
for (j=0;j<64;j++)
zobrist[fil][i][j]=rand()^((__int64)rand()<<15)^((__int64)rand()<<30)^
((__int64)rand()<<45)^((__int64)rand()<<60);
It does not help and I get different numbers in compile mode and in release
mode.
Uri
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