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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ones.h>
#include "addition.h"
#include "subtraction.h"
#include "multiplication.h"
#include "division.h"
#include "sqrt.h"
#include "sum.h"
#include "correl.h"
#include "matrix.h"
#include "mean.h"
#include "doubleComplex.h"
doubleComplex zcovars (doubleComplex* inp1, int sr1, int sc1, doubleComplex* inp2, int sr2, int sc2, doubleComplex* fre, int sr3, int sc3)
{
doubleComplex fr[sr3*sc3], s3 = 0, sfrr[sc3], p1[sc2*sc3], s1 = 0, d1[sc2] , one[sr1*sc1], p2[sc1 * sc2], p3[sr3*sc3], sfrc[sr3], p4[sr3], s2 = 0, d2[sr1*sc1], one2[sr2*sc2], p5[sr1*sc1*sr2*sc2], p6[sr1*sc1*sr2*sc2],s4 = 0;
for(int i = 0; i < sr3*sc3; i++)
s3 = zadds(s3, fre[i]);
for(int i = 0; i < sr3*sc3; i++)
fr[i] = zrdivs(fre[i], s3);
zrowsuma(fr, sr3, sc3, sfrr);
for(int i = 0; i < sc3; i++)
p1[i] = zmuls(inp2[i], sfrr[i]);
for(int i = 0; i < sc3; i++)
s1 = zadds(s1, p1[i]);
for(int i = 0; i < sc2; i++)
d1[i] = zdiffs(inp2[i], s1);
zonesa(one, sr1*sc1, 1);
zmulma(one, sr1*sc1, 1, d1, 1, sc2, p2);
for(int i = 0; i < sr3*sc3; i++)
p3[i] = fr[i] * p2[i];
zcolumnsuma(fr, sr3, sc3, sfrc);
for(int i = 0; i < sr3; i++)
p4[i] = zmuls(inp1[i], sfrc[i]);
for(int i = 0; i < sr3; i++)
s2 = zadds(s2, p4[i]);
for(int i = 0; i < sr1*sc1; i++)
d2[i] = zdiffs(inp1[i], s2);
zonesa(one2, 1, sr2*sc2);
zmulma(d2, sr1*sc1, 1, one2, 1, sr2*sc2, p5);
for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
p6[i] = zmuls(p5[i], p3[i]);
for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
s4 = zadds(s4, p6[i]);
return s4;
}
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