46 files changed, 346 insertions, 0 deletions

diff --git a/demos/Brijesh_Demos/test_covar.sci b/demos/Brijesh_Demos/test_covar.sci
new file mode 100644
index 0000000..b182532
--- /dev/null
+++ b/demos/Brijesh_Demos/test_covar.sci
@@ -0,0 +1,20 @@
+function test_covar
+	disp('Datatype: Double');
+	i3 = [1 2 3 4 5 6];
+	i4 = [1 2];
+	fre = [1 2 ;3 4; 5 6; 7 8; 9 1; 2 3];
+	o2 = covar(i3,i4,fre);
+	disp(o2);
+	disp('Datatype: float');
+	i7 = float([1 2 3 4 5 6]);
+	i8 = float([1 2]);
+	ffre = float([1 2 ;3 4; 5 6; 7 8; 9 1; 2 3]);
+	o4 = covar(i7,i8,ffre);
+	disp(o4);
+	disp('Datatype: DoubleComplex');
+	i11 = [1 2 %i 4 6+6*%i 5];
+	i12 = [1 %i];
+	zfre = [1 %i ;3 0; 5 6*%i; 7 8; 9 1; 2 3];
+	o6 = covar(i11,i12,zfre);
+	disp(o6);
+endfunction
diff --git a/includes/sci2clib.h b/includes/sci2clib.h
index d7964b5..9a252ee 100644
--- a/includes/sci2clib.h
+++ b/includes/sci2clib.h
@@ -677,6 +677,9 @@ extern "C" {
 /* interfacing correl */
 #include "correl.h"
 #include "int_correl.h"
+/* interfacing covar */
+#include "covar.h"
+#include "int_covar.h"
 
 
 /* TYPE */
diff --git a/jar/scilab_en_US_help.jar b/jar/scilab_en_US_help.jar
index aeb5ddf..45d24f1 100644
--- a/jar/scilab_en_US_help.jar
+++ b/jar/scilab_en_US_help.jar
diff --git a/macros/ASTManagement/lib b/macros/ASTManagement/lib
new file mode 100644
index 0000000..dee4362
--- /dev/null
+++ b/macros/ASTManagement/lib
diff --git a/macros/CCodeGeneration/lib b/macros/CCodeGeneration/lib
new file mode 100644
index 0000000..3d4fed1
--- /dev/null
+++ b/macros/CCodeGeneration/lib
diff --git a/macros/ErrorMessages/lib b/macros/ErrorMessages/lib
new file mode 100644
index 0000000..ba3b9a5
--- /dev/null
+++ b/macros/ErrorMessages/lib
diff --git a/macros/FunctionAnnotation/lib b/macros/FunctionAnnotation/lib
new file mode 100644
index 0000000..239105c
--- /dev/null
+++ b/macros/FunctionAnnotation/lib
diff --git a/macros/FunctionList/lib b/macros/FunctionList/lib
new file mode 100644
index 0000000..1c722dd
--- /dev/null
+++ b/macros/FunctionList/lib
diff --git a/macros/GeneralFunctions/lib b/macros/GeneralFunctions/lib
new file mode 100644
index 0000000..7586a91
--- /dev/null
+++ b/macros/GeneralFunctions/lib
diff --git a/macros/Hardware/AVR/lib b/macros/Hardware/AVR/lib
new file mode 100644
index 0000000..ed4c52b
--- /dev/null
+++ b/macros/Hardware/AVR/lib
diff --git a/macros/Hardware/RasberryPi/Digital/lib b/macros/Hardware/RasberryPi/Digital/lib
new file mode 100644
index 0000000..ba42ba7
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Digital/lib
diff --git a/macros/Hardware/RasberryPi/I2C/lib b/macros/Hardware/RasberryPi/I2C/lib
new file mode 100644
index 0000000..561476c
--- /dev/null
+++ b/macros/Hardware/RasberryPi/I2C/lib
diff --git a/macros/Hardware/RasberryPi/Interrupt/lib b/macros/Hardware/RasberryPi/Interrupt/lib
new file mode 100644
index 0000000..97a61ac
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Interrupt/lib
diff --git a/macros/Hardware/RasberryPi/Misc/lib b/macros/Hardware/RasberryPi/Misc/lib
new file mode 100644
index 0000000..c718615
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Misc/lib
diff --git a/macros/Hardware/RasberryPi/SPI/lib b/macros/Hardware/RasberryPi/SPI/lib
new file mode 100644
index 0000000..a16d474
--- /dev/null
+++ b/macros/Hardware/RasberryPi/SPI/lib
diff --git a/macros/Hardware/RasberryPi/Serial/lib b/macros/Hardware/RasberryPi/Serial/lib
new file mode 100644
index 0000000..a007f00
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Serial/lib
diff --git a/macros/Hardware/RasberryPi/Setup/lib b/macros/Hardware/RasberryPi/Setup/lib
new file mode 100644
index 0000000..83655c9
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Setup/lib
diff --git a/macros/Hardware/RasberryPi/Shift/lib b/macros/Hardware/RasberryPi/Shift/lib
new file mode 100644
index 0000000..2b12025
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Shift/lib
diff --git a/macros/Hardware/RasberryPi/Soft/lib b/macros/Hardware/RasberryPi/Soft/lib
new file mode 100644
index 0000000..09ecede
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Soft/lib
diff --git a/macros/Hardware/RasberryPi/Timing/lib b/macros/Hardware/RasberryPi/Timing/lib
new file mode 100644
index 0000000..d271c90
--- /dev/null
+++ b/macros/Hardware/RasberryPi/Timing/lib
diff --git a/macros/Hardware/RasberryPi/gertBoard/lib b/macros/Hardware/RasberryPi/gertBoard/lib
new file mode 100644
index 0000000..e8db080
--- /dev/null
+++ b/macros/Hardware/RasberryPi/gertBoard/lib
diff --git a/macros/Hardware/RasberryPi/lcd/lib b/macros/Hardware/RasberryPi/lcd/lib
new file mode 100644
index 0000000..c2b693f
--- /dev/null
+++ b/macros/Hardware/RasberryPi/lcd/lib
diff --git a/macros/Hardware/RasberryPi/lcd128x64/lib b/macros/Hardware/RasberryPi/lcd128x64/lib
new file mode 100644
index 0000000..94dfda8
--- /dev/null
+++ b/macros/Hardware/RasberryPi/lcd128x64/lib
diff --git a/macros/Hardware/RasberryPi/lib b/macros/Hardware/RasberryPi/lib
new file mode 100644
index 0000000..49ed811
--- /dev/null
+++ b/macros/Hardware/RasberryPi/lib
diff --git a/macros/Hardware/RasberryPi/mcp/lib b/macros/Hardware/RasberryPi/mcp/lib
new file mode 100644
index 0000000..d411aad
--- /dev/null
+++ b/macros/Hardware/RasberryPi/mcp/lib
diff --git a/macros/Hardware/RasberryPi/pcf/lib b/macros/Hardware/RasberryPi/pcf/lib
new file mode 100644
index 0000000..da6a8da
--- /dev/null
+++ b/macros/Hardware/RasberryPi/pcf/lib
diff --git a/macros/Hardware/RasberryPi/piGlow/lib b/macros/Hardware/RasberryPi/piGlow/lib
new file mode 100644
index 0000000..3f30f85
--- /dev/null
+++ b/macros/Hardware/RasberryPi/piGlow/lib
diff --git a/macros/Hardware/RasberryPi/pinMap/lib b/macros/Hardware/RasberryPi/pinMap/lib
new file mode 100644
index 0000000..133363e
--- /dev/null
+++ b/macros/Hardware/RasberryPi/pinMap/lib
diff --git a/macros/Hardware/RasberryPi/pwm/lib b/macros/Hardware/RasberryPi/pwm/lib
new file mode 100644
index 0000000..8711baf
--- /dev/null
+++ b/macros/Hardware/RasberryPi/pwm/lib
diff --git a/macros/ImageProcessing/core/lib b/macros/ImageProcessing/core/lib
new file mode 100644
index 0000000..40b7b0a
--- /dev/null
+++ b/macros/ImageProcessing/core/lib
diff --git a/macros/ImageProcessing/highgui/lib b/macros/ImageProcessing/highgui/lib
new file mode 100644
index 0000000..0d7f88a
--- /dev/null
+++ b/macros/ImageProcessing/highgui/lib
diff --git a/macros/ImageProcessing/imgproc/lib b/macros/ImageProcessing/imgproc/lib
new file mode 100644
index 0000000..63b5e7e
--- /dev/null
+++ b/macros/ImageProcessing/imgproc/lib
diff --git a/macros/Scilab-Arduino/lib b/macros/Scilab-Arduino/lib
new file mode 100644
index 0000000..a62fd4e
--- /dev/null
+++ b/macros/Scilab-Arduino/lib
diff --git a/macros/SymbolTable/lib b/macros/SymbolTable/lib
new file mode 100644
index 0000000..4379c83
--- /dev/null
+++ b/macros/SymbolTable/lib
diff --git a/macros/ToolInitialization/INIT_FillSCI2LibCDirs.sci b/macros/ToolInitialization/INIT_FillSCI2LibCDirs.sci
index ff5afb5..617f689 100644
--- a/macros/ToolInitialization/INIT_FillSCI2LibCDirs.sci
+++ b/macros/ToolInitialization/INIT_FillSCI2LibCDirs.sci
@@ -1183,6 +1183,41 @@ INIT_GenAnnFLFunctions(FunctionName,SCI2CLibCFLFunDir,ClassName,GeneralReport,Ex
 

 

 // -------------------

+// --- Class COVAR. ---

+// -------------------

+ClassName = 'covar';

+

+// --- Class Annotation. ---

+PrintStringInfo('   Adding Class: '+ClassName+'.',GeneralReport,'file','y');

+ClassFileName = fullfile(SCI2CLibCAnnClsDir,ClassName+ExtensionCAnnCls);

+PrintStringInfo('NIN=          3',ClassFileName,'file','y');

+PrintStringInfo('NOUT=         1',ClassFileName,'file','y');

+PrintStringInfo('OUT(1).TP=    IN(1).TP',ClassFileName,'file','y');

+PrintStringInfo('OUT(1).SZ(1)= ''1''',ClassFileName,'file','y');

+PrintStringInfo('OUT(1).SZ(2)= ''1''',ClassFileName,'file','y');

+

+

+

+//---Function list class. ----

+ClassFileName = fullfile(SCI2CLibCFLClsDir,ClassName+ExtensionCFuncListCls);

+PrintStringInfo('d2d2d2'+ArgSeparator+'d0',ClassFileName,'file','y');

+PrintStringInfo('s2s2s2'+ArgSeparator+'s0',ClassFileName,'file','y');

+PrintStringInfo('z2z2z2'+ArgSeparator+'z0',ClassFileName,'file','y');

+

+

+

+// --- Annotation Function And Function List Function. ---

+FunctionName = 'covar';

+PrintStringInfo('      Adding Function: '+FunctionName+'.',GeneralReport,'file','y');

+INIT_GenAnnFLFunctions(FunctionName,SCI2CLibCAnnFunDir,ClassName,GeneralReport,ExtensionCAnnFun);

+INIT_GenAnnFLFunctions(FunctionName,SCI2CLibCFLFunDir,ClassName,GeneralReport,ExtensionCFuncListFun);

+

+

+

+

+

+

+// -------------------

 // --- Class Nanmin. ---

 // -------------------

 ClassName = 'Nanmin';

diff --git a/macros/ToolInitialization/lib b/macros/ToolInitialization/lib
new file mode 100644
index 0000000..670a52e
--- /dev/null
+++ b/macros/ToolInitialization/lib
diff --git a/macros/findDeps/getAllHeaders.sci b/macros/findDeps/getAllHeaders.sci
index 6f417ec..d33bf16 100644
--- a/macros/findDeps/getAllHeaders.sci
+++ b/macros/findDeps/getAllHeaders.sci
@@ -164,6 +164,7 @@ function allHeaders = getAllHeaders(SharedInfo)
       "src/c/statisticsFunctions/includes/wcenter.h"
       "src/c/statisticsFunctions/includes/center.h"
       "src/c/statisticsFunctions/includes/correl.h"
+      "src/c/statisticsFunctions/includes/covar.h"
       "src/c/operations/includes/subtraction.h"
       "src/c/operations/includes/addition.h"
       "src/c/operations/includes/dynlib_operations.h"
diff --git a/macros/findDeps/getAllInterfaces.sci b/macros/findDeps/getAllInterfaces.sci
index 9d44df9..967051d 100644
--- a/macros/findDeps/getAllInterfaces.sci
+++ b/macros/findDeps/getAllInterfaces.sci
@@ -152,6 +152,7 @@ function allInterfaces = getAllInterfaces(SharedInfo)
       "src/c/statisticsFunctions/interfaces/int_wcenter.h"
       "src/c/statisticsFunctions/interfaces/int_center.h"
       "src/c/statisticsFunctions/interfaces/int_correl.h"
+      "src/c/statisticsFunctions/interfaces/int_covar.h"
       "src/c/operations/interfaces/int_OpEqual.h"
       "src/c/operations/interfaces/int_OpLogNot.h"
       "src/c/operations/interfaces/int_OpLogEq.h"
diff --git a/macros/findDeps/getAllSources.sci b/macros/findDeps/getAllSources.sci
index c3fd3a5..34f9dd3 100644
--- a/macros/findDeps/getAllSources.sci
+++ b/macros/findDeps/getAllSources.sci
@@ -1100,6 +1100,9 @@ function allSources = getAllSources(SharedInfo,BuildTool)
       "src/c/statisticsFunctions/correl/scorrelfres.c"
       "src/c/statisticsFunctions/correl/zcorrels.c"
       "src/c/statisticsFunctions/correl/zcorrelfres.c"
+      "src/c/statisticsFunctions/covar/dcovars.c"
+      "src/c/statisticsFunctions/covar/scovars.c"
+      "src/c/statisticsFunctions/covar/zcovars.c"
       "src/c/operations/multiplication/cmula.c"
       "src/c/operations/multiplication/cmuls.c"
       "src/c/operations/multiplication/cmulv.c"
diff --git a/macros/findDeps/lib b/macros/findDeps/lib
new file mode 100644
index 0000000..afcd3ca
--- /dev/null
+++ b/macros/findDeps/lib
diff --git a/macros/lib b/macros/lib
new file mode 100644
index 0000000..551263e
--- /dev/null
+++ b/macros/lib
diff --git a/src/c/statisticsFunctions/covar/dcovars.c b/src/c/statisticsFunctions/covar/dcovars.c
new file mode 100644
index 0000000..f67905e
--- /dev/null
+++ b/src/c/statisticsFunctions/covar/dcovars.c
@@ -0,0 +1,70 @@
+#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"
+
+double dcovars (double* inp1, int sr1, int sc1, double* inp2, int sr2, int sc2, double* fre, int sr3, int sc3)
+{
+    double 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 += fre[i];
+
+    for(int i = 0; i < sr3*sc3; i++)
+	fr[i] = fre[i]/s3;
+
+    drowsuma(fr, sr3, sc3, sfrr);
+
+    for(int i = 0; i < sc3; i++)
+	p1[i] = inp2[i] * sfrr[i];
+
+    for(int i = 0; i < sc3; i++)
+	s1 += p1[i];
+
+
+
+    for(int i = 0; i < sc2; i++)
+	d1[i] = inp2[i] - s1;
+
+    donesa(one, sr1*sc1, 1);
+
+    dmulma(one, sr1*sc1, 1, d1, 1, sc2,  p2);
+
+    for(int i = 0; i < sr3*sc3; i++)
+	p3[i] = fr[i] * p2[i];
+
+    dcolumnsuma(fr, sr3, sc3, sfrc);
+
+    for(int i = 0; i < sr3; i++)
+	p4[i] = inp1[i] * sfrc[i];
+
+    for(int i = 0; i < sr3; i++)
+	s2 += p4[i];
+
+    for(int i = 0; i < sr1*sc1; i++)
+	d2[i] = inp1[i] - s2;
+
+    donesa(one2, 1, sr2*sc2);
+
+    dmulma(d2, sr1*sc1, 1, one2, 1, sr2*sc2, p5);
+
+    for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
+	p6[i] = p5[i] * p3[i];
+
+
+    for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
+	s4 += p6[i];
+
+
+    return s4;      
+
+}
diff --git a/src/c/statisticsFunctions/covar/scovars.c b/src/c/statisticsFunctions/covar/scovars.c
new file mode 100644
index 0000000..daff6b9
--- /dev/null
+++ b/src/c/statisticsFunctions/covar/scovars.c
@@ -0,0 +1,70 @@
+#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"
+
+float scovars (float* inp1, int sr1, int sc1, float* inp2, int sr2, int sc2, float* fre, int sr3, int sc3)
+{
+    float 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 += fre[i];
+
+    for(int i = 0; i < sr3*sc3; i++)
+	fr[i] = fre[i]/s3;
+
+    srowsuma(fr, sr3, sc3, sfrr);
+
+    for(int i = 0; i < sc3; i++)
+	p1[i] = inp2[i] * sfrr[i];
+
+    for(int i = 0; i < sc3; i++)
+	s1 += p1[i];
+
+
+
+    for(int i = 0; i < sc2; i++)
+	d1[i] = inp2[i] - s1;
+
+    sonesa(one, sr1*sc1, 1);
+
+    smulma(one, sr1*sc1, 1, d1, 1, sc2,  p2);
+
+    for(int i = 0; i < sr3*sc3; i++)
+	p3[i] = fr[i] * p2[i];
+
+    scolumnsuma(fr, sr3, sc3, sfrc);
+
+    for(int i = 0; i < sr3; i++)
+	p4[i] = inp1[i] * sfrc[i];
+
+    for(int i = 0; i < sr3; i++)
+	s2 += p4[i];
+
+    for(int i = 0; i < sr1*sc1; i++)
+	d2[i] = inp1[i] - s2;
+
+    sonesa(one2, 1, sr2*sc2);
+
+    smulma(d2, sr1*sc1, 1, one2, 1, sr2*sc2, p5);
+
+    for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
+	p6[i] = p5[i] * p3[i];
+
+
+    for(int i = 0; i < sr1*sc1*sr2*sc2; i++)
+	s4 += p6[i];
+
+
+    return s4;      
+
+}
diff --git a/src/c/statisticsFunctions/covar/zcovars.c b/src/c/statisticsFunctions/covar/zcovars.c
new file mode 100644
index 0000000..6adbd3c
--- /dev/null
+++ b/src/c/statisticsFunctions/covar/zcovars.c
@@ -0,0 +1,71 @@
+#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;      
+
+}
diff --git a/src/c/statisticsFunctions/includes/covar.h b/src/c/statisticsFunctions/includes/covar.h
new file mode 100644
index 0000000..4f37f85
--- /dev/null
+++ b/src/c/statisticsFunctions/includes/covar.h
@@ -0,0 +1,43 @@
+ /* Copyright (C) 2017 - IIT Bombay - FOSSEE
+
+ This file must be used under the terms of the CeCILL.
+ This source file is licensed as described in the file COPYING, which
+ you should have received as part of this distribution.  The terms
+ are also available at
+ http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ Author: Brijesh Gupta C R
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __COVAR_H__
+#define __COVAR_H__
+#include "types.h"
+#include "doubleComplex.h"
+#include "floatComplex.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"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+double dcovars (double* inp1, int sr1, int sc1, double* inp2, int sr2, int sc2, double* fre, int sr3, int sc3);
+float scovars (float* inp1, int sr1, int sc1, float* inp2, int sr2, int sc2, float* fre, int sr3, int sc3);
+doubleComplex zcovars (doubleComplex* inp1, int sr1, int sc1, doubleComplex* inp2, int sr2, int sc2, doubleComplex* fre, int sr3, int sc3);
+
+
+#ifdef  __cplusplus 
+} /* extern "C" */
+#endif
+
+#endif /*__COVAR_H__*/
diff --git a/src/c/statisticsFunctions/interfaces/int_covar.h b/src/c/statisticsFunctions/interfaces/int_covar.h
new file mode 100644
index 0000000..5ebef22
--- /dev/null
+++ b/src/c/statisticsFunctions/interfaces/int_covar.h
@@ -0,0 +1,29 @@
+ /* Copyright (C) 2017 - IIT Bombay - FOSSEE
+
+ This file must be used under the terms of the CeCILL.
+ This source file is licensed as described in the file COPYING, which
+ you should have received as part of this distribution.  The terms
+ are also available at
+ http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ Author: Brijesh Gupta C R
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+#ifndef __INT_COVAR_H__
+#define __INT_COVAR_H__
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+	
+#define d2d2d2covard0(in1, size, in2, size2, in3, size3)		dcovars(in1, size[0], size[1], in2, size2[0], size2[1], in3, size3[0], size3[1])	
+#define s2s2s2covars0(in1, size, in2, size2, in3, size3)		scovars(in1, size[0], size[1], in2, size2[0], size2[1], in3, size3[0], size3[1])	
+#define z2z2z2covarz0(in1, size, in2, size2, in3, size3)		zcovars(in1, size[0], size[1], in2, size2[0], size2[1], in3, size3[0], size3[1])	
+
+
+#ifdef  __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*__INT_COVAR_H__*/