Author: Uri Blass
Date: 02:08:12 11/04/02
Go up one level in this thread
On November 04, 2002 at 05:07:11, Uri Blass wrote:
>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.
Correction I mean debug and release.
Uri
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