<s>
In	O
computer	O
graphics	O
,	O
a	O
digital	B-Algorithm
differential	I-Algorithm
analyzer	I-Algorithm
(	O
DDA	O
)	O
is	O
hardware	O
or	O
software	O
used	O
for	O
interpolation	B-Algorithm
of	O
variables	O
over	O
an	O
interval	O
between	O
start	O
and	O
end	O
point	O
.	O
</s>
<s>
They	O
can	O
be	O
extended	O
to	O
non	O
linear	O
functions	O
,	O
such	O
as	O
perspective	O
correct	O
texture	O
mapping	O
,	O
quadratic	O
curves	O
,	O
and	O
traversing	O
voxels	B-Algorithm
.	O
</s>
<s>
The	O
DDA	O
method	O
can	O
be	O
implemented	O
using	O
floating-point	B-Algorithm
or	O
integer	O
arithmetic	O
.	O
</s>
<s>
The	O
native	O
floating-point	B-Algorithm
implementation	O
requires	O
one	O
addition	O
and	O
one	O
rounding	O
operation	O
per	O
interpolated	O
value	O
(	O
e.g.	O
</s>
<s>
This	O
process	O
is	O
only	O
efficient	O
when	O
an	O
FPU	B-General_Concept
with	O
fast	O
add	O
and	O
rounding	O
operation	O
will	O
be	O
available	O
.	O
</s>
