Cryptography Reference
In-Depth Information
comparison of two
CLINT
objects
Function:
int cmp_l (CLINT a_l, CLINT b_l);
Syntax:
a_l
,
b_l
(arguments)
Input:
−
1
if
(
value of
a_l
)
<
(
value of
b_l
)
0
if
(
value of
a_l
)=(
value of
b_l
)
1
if
(
value of
a_l
)
>
(
value of
b_l
)
Return:
int
cmp_l (CLINT a_l, CLINT b_l)
{
clint *msdptra_l, *msdptrb_l;
int la = DIGITS_L (a_l);
int lb = DIGITS_L (b_l);
The first test checks whether both arguments have length, and hence value,
0
.
Then any leading zeros are eliminated, and a decision is attempted on the basis
of the number of digits.
if(la==0&&lb==0)
{
return 0;
}
while (a_l[la] == 0 && la > 0)
{
--la;
}
while (b_l[lb] == 0 && lb > 0)
{
--lb;
}
if(la==0&&lb==0)
{
return 0;
}
if (la > lb)
{
return 1;
}
