1 files changed, 37 insertions, 0 deletions
diff --git a/src/c/statisticsFunctions/correl/zcorrels.c b/src/c/statisticsFunctions/correl/zcorrels.c
new file mode 100644
index 00000000..818a6800
--- /dev/null
+++ b/src/c/statisticsFunctions/correl/zcorrels.c
@@ -0,0 +1,37 @@
+#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 zcorrels (doubleComplex* inp1, int sr1, int sc1, doubleComplex* inp2, int sr2, int sc2)
+{
+    doubleComplex m1 = 0, m2 = 0, s1 = 0, s2 = 0, diff1[sr1*sc1], diff2[sr2*sc2], sum = 0;
+    m1 = zmeana(inp1, sr1*sc1);
+    m2 = zmeana(inp2, sr2*sc2);
+
+    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(zsuma(diff1, sr1*sc1));
+    s2 = zsqrts(zsuma(diff2, sr2*sc2));
+
+    for(int i = 0; i < sr2*sc2; i++)
+	sum = zadds(sum, zmuls(zdiffs(inp1[i], m1), zdiffs(inp2[i], m2))); 
+
+    return zrdivs(sum, zmuls(s1,s2));
+}