Roman Kononov napsal(a):
The following bug has been logged online:
Bug reference: 4114
Logged by: Roman Kononov
Email address: [EMAIL PROTECTED]
PostgreSQL version: 8.3.1
Operating system: x86_64 GNU/Linux
Description: Inconsistent shift operator
Details:
The below test cases show the obvious inconsistency between different
integer types.
test=# \t
Showing only tuples.
test=# select 1::int2 << 17;
0
test=# select 1::int4 << 33;
2
test=# select 1::int8 << 65;
2
test=# select 2::int2 >> 17;
0
test=# select 2::int4 >> 33;
1
test=# select 2::int8 >> 65;
1
It seems to be OK regarding how C shift operator works. Try
#include <stdio.h>
#include <inttypes.h>
void fce(int16_t arg1, int32_t arg2)
{
int16_t res = arg1 << arg2;
printf("result: %i\n", res);
}
int main()
{
fce(1,17);
return 0;
}
Zdenek
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