Different exponent in error messages

["Andrus" <eetasoft@xxxxxxxxx>]

I have NUMERIC(9,3) field.
Postgres produces different (!) error messages when inserted value is too 
big to fit into this field

ERROR:  numeric field overflow

DETAIL:  The absolute value is greater than or equal to 10^6 for field with 
precision 9, scale 3.;

DETAIL:  The absolute value is greater than or equal to 10^9 for field with 
precision 9, scale 3.;

DETAIL:  The absolute value is greater than or equal to 10^7 for field with 
precision 9, scale 3.;


Why Postgres 8.1.1 in XP returns different exponents ( 10^6, 10^9, 10^7) for 
field with precision 9, scale 3 ?

Andrus.