On 04-May-98 Rik van Riel wrote:
> /* Ugly helper function, we don't want to do without it because
> * the points variable might overflow if we just squared the
> * size instead. */
> inline int int_sqrt(int x)
> {
> int i,out;
> for (i = 10; i-- > 0;)
> out = x + out >> 1;
> if (out)
> return out;
> return 1;
> }
>
Well I do not understand the rest, but if your purpose is to
evauate the square root of an (unsigned) integer using ten
iterations of Newton's method, the code could be:
inline int int_sqrt(int x)
{
int i, out=x;
if (out) {
for (i = 10; i > 0; i--)
out = ( out + x/out ) >> 1 ;
return out;
}
return 0;
}
- --
Manuel J. Galan
manolow@step.es
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