1 files changed, 58 insertions, 0 deletions
diff --git a/src/c/statisticsFunctions/correl/zcorrelfres.c b/src/c/statisticsFunctions/correl/zcorrelfres.c
new file mode 100644
index 00000000..b026c58a
--- /dev/null
+++ b/src/c/statisticsFunctions/correl/zcorrelfres.c
@@ -0,0 +1,58 @@
+#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 "pow.h"
+#include "sqrt.h"
+#include "sum.h"
+#include "correl.h"
+#include "matrix.h"
+#include "mean.h"
+#include "doubleComplex.h"
+
+doubleComplex zcorrelfres (doubleComplex* inp1, int sr1, int sc1, doubleComplex* inp2, int sr2, int sc2, doubleComplex* inp3, int sr3, int sc3)
+{
+    doubleComplex p1[sr3], p2[sc3], m1 = 0, m2 = 0,  s1 = 0, s2 = 0, s3 = 0, diff1[sr1*sc1], diff2[sr2*sc2], sum = 0, prod[sr3];
+
+    doubleComplex fr[sr3*sc3];
+
+    for(int i = 0; i < sr3*sc3; i++)
+	s3 = zadds(s3, inp3[i]);
+
+    for(int i = 0; i < sr3*sc3; i++)
+	fr[i] = zrdivs(inp3[i],s3);
+
+
+
+    zcolumnsuma(fr, sr3, sc3, p1);
+    zrowsuma(fr, sr3, sc3, p2);
+
+
+
+    m1 = zmulv(inp1, p1, sr3);
+    m2 = zmulv(inp2, p2, sc3);
+
+    for(int i = 0; i < sr1*sc1; i++)
+	diff1[i] = zpows(zdiffs(inp1[i], m1), DoubleComplex(2,0));
+
+    for(int i = 0; i < sr2*sc2; i++)
+	diff2[i] = zpows(zdiffs(inp2[i], m2), DoubleComplex(2,0));
+
+
+    s1 = zsqrts(zmulv(diff1, p1, sr3));
+    s2 = zsqrts(zmulv(p2, diff2, sc3));
+
+    for(int i = 0; i < sr1*sc1; i++)
+	diff1[i] = zdiffs(inp1[i], m1);
+
+    for(int i = 0; i < sr2*sc2; i++)
+	diff2[i] = zdiffs(inp2[i], m2);
+
+    zmulma(fr, sr3, sc3, diff2, sc2, 1, prod);
+
+    return zrdivs(zmulv(diff1, prod, sr3), zmuls(s1, s2));
+}