/*-----------------------------------------------
 *
 * Associative LMS vector search (C-RAM)
 *
 */

#include <cram.h>
#include "lms.h"

typedef short unsigned int datatype;
cuint12 data[VECTORSIZE];

inline cuint sqr(const cint &x)
{
    cuint a(x.bits - 1, UNALIGNED);
    cuint result(2 * a.bits, UNALIGNED);

    a = abs(x);
    result.mult3(a, a);         /*result = a * a; */
    return (result);
}

void updateBest(const datatype key[VECTORSIZE], const datatype newdata[VECTORSIZE])
{
    int v;
    cuint24 error;
    cboolean bestrecord;

    /* find record with LMS fit */
    error = 0;
    for (v = 0; v < VECTORSIZE; v++)
        error += sqr((data[v]) - key[v]);
    bestrecord = error.findmin();

    /* update record with new value */
    cif(bestrecord)
        for (v = 0; v < VECTORSIZE; v++)
            data[v] = newdata[v];
    cend
}