From ea958d3c401761dcc24865d9639b2fab31038db8 Mon Sep 17 00:00:00 2001
From: Brijeshcr
Date: Thu, 6 Jul 2017 15:48:47 +0530
Subject: Revert "LinearAlgebra Function Added"

---
 src/c/signalProcessing/transforms/idct/cidcta.c | 118 ++++++++++++++++++++++++
 src/c/signalProcessing/transforms/idct/didcta.c |  83 +++++++++++++++++
 src/c/signalProcessing/transforms/idct/sidcta.c |  83 +++++++++++++++++
 src/c/signalProcessing/transforms/idct/zidcta.c | 118 ++++++++++++++++++++++++
 4 files changed, 402 insertions(+)
 create mode 100644 src/c/signalProcessing/transforms/idct/cidcta.c
 create mode 100644 src/c/signalProcessing/transforms/idct/didcta.c
 create mode 100644 src/c/signalProcessing/transforms/idct/sidcta.c
 create mode 100644 src/c/signalProcessing/transforms/idct/zidcta.c

(limited to 'src/c/signalProcessing/transforms/idct')

diff --git a/src/c/signalProcessing/transforms/idct/cidcta.c b/src/c/signalProcessing/transforms/idct/cidcta.c
new file mode 100644
index 0000000..ae98ba1
--- /dev/null
+++ b/src/c/signalProcessing/transforms/idct/cidcta.c
@@ -0,0 +1,118 @@
+/* Copyright (C) 2016 - 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: Ukasha Noor
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+
+#include "idct.h"
+#include "addition.h"
+#include "types.h"
+#include "floatComplex.h"
+#include "multiplication.h" 
+/*#include "matrixMultiplication"*/
+/*#include <fftw3.h>*/
+#include <math.h>
+
+void cidcta(floatComplex *in,int row,int col,floatComplex *out)
+{
+	int i,j,k,u,v;
+	int n=col;
+	int x,y;
+	float res,ress,vv,ff;
+	float re,z,q,m;
+	floatComplex accu = FloatComplex(0, 0);
+	floatComplex temp,mm,aa,bb;
+	if(row==1)
+	{
+		res=1./sqrt(n);
+		ress=sqrt(2./n);
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=FloatComplex(0,0);
+				for(i=0;i<row;i++)
+				{
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;		
+						if(y==0)
+						{
+							q=res*(cos(((M_PI)*(j)*(v+1./2.))/n));
+							aa=FloatComplex(q,0);
+							out[x]=cadds(out[x],cmuls(in[y],aa));
+						}
+						else
+						{
+							q=ress*(cos(((M_PI)*(j)*(v+1./2.))/n));
+							aa=FloatComplex(q,0);
+							out[x]=cadds(out[x],cmuls(in[y],aa));
+						}
+					}
+				}
+			}
+			
+		}
+	}	
+	else	
+	{
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=FloatComplex(0,0);
+				for(i=0;i<row;i++)
+				{
+					re=0;
+					mm=FloatComplex(0,0);
+					temp=FloatComplex(0,0);
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;
+						mm=in[j*row+i];
+						z=(float)(((float)v+1.0/2.0)*(float)j);
+						q=(float)(M_PI/(float)col);
+						vv=cos(q*z);
+						aa=FloatComplex(vv,0);	
+						mm=cmuls(mm,aa);
+						if(j==0)
+						{
+							vv=1./sqrt((float)col);
+							aa=FloatComplex(vv,0);
+							temp=cadds(temp,cmuls(mm,aa));
+						}
+						else
+						{
+							vv=sqrt(2./col);
+							aa=FloatComplex(vv,0);
+							temp=cadds(temp,cmuls(mm,aa));
+						}
+					}
+					z=(float)(((float)u+1.0/2.0)*(float)i);
+					q=(float)(M_PI/(float)row);	
+					if(i==0)
+					{
+						vv=(cos(z*q))*(1./sqrt(row));
+						aa=FloatComplex(vv,0);
+						out[x]=cadds(out[x],cmuls(temp,aa));
+					}
+					else
+					{
+						vv=(cos(z*q))*sqrt(2./row);
+						aa=FloatComplex(vv,0);
+						out[x]=cadds(out[x],cmuls(temp,aa));
+					}
+				}
+			}
+		}
+	}					
+}
diff --git a/src/c/signalProcessing/transforms/idct/didcta.c b/src/c/signalProcessing/transforms/idct/didcta.c
new file mode 100644
index 0000000..5f47516
--- /dev/null
+++ b/src/c/signalProcessing/transforms/idct/didcta.c
@@ -0,0 +1,83 @@
+/* Copyright (C) 2016 - 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: Ukasha Noor
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+
+#include "idct.h"
+/*#include <fftw3.h>*/
+#include <math.h>
+
+void didcta(double *in,int row,int col,double *out)
+{
+	int i,j,k,u,v;
+	int n=col;
+	int x,y;
+	double res,ress;
+	double re,z,q,m;
+	if(row==1)
+	{
+		res=1./sqrt(n);
+		ress=sqrt(2./n);
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=0;
+				for(i=0;i<row;i++)
+				{
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;		
+						if(y==0)
+						out[x]+=res*in[y]*(cos(((M_PI)*(j)*(v+1./2.))/n));
+						else
+						out[x]+=ress*in[y]*(cos(((M_PI)*(j)*(v+1./2.))/n));
+					}
+				}
+			}
+				
+		}
+	}
+	else
+	{
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=0;
+				for(i=0;i<row;i++)
+				{
+					re=0;
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;
+						m=(double)in[j*row+i];
+						z=(double)(((double)v+1.0/2.0)*(double)j);
+						q=(double)(M_PI/(double)col);	
+						m=m*(cos(q*z));
+						if(j==0)
+						re+=m/sqrt((double)col);
+						else
+						re+=m*sqrt(2./col);
+					}
+					z=(double)(((double)u+1.0/2.0)*(double)i);
+					q=(double)(M_PI/(double)row);	
+					if(i==0)
+					out[x]+=(re*(cos(z*q)))/sqrt((double)row);
+					else
+					out[x]+=(re*(cos(z*q))*sqrt(2./row));
+				}
+			}
+		}
+	}					
+}
diff --git a/src/c/signalProcessing/transforms/idct/sidcta.c b/src/c/signalProcessing/transforms/idct/sidcta.c
new file mode 100644
index 0000000..62f85da
--- /dev/null
+++ b/src/c/signalProcessing/transforms/idct/sidcta.c
@@ -0,0 +1,83 @@
+/* Copyright (C) 2016 - 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: Ukasha Noor
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+
+#include "idct.h"
+/*#include <fftw3.h>*/
+#include <math.h>
+
+void sidcta(float *in,int row,int col,float *out)
+{
+	int i,j,k,u,v;
+	int n=col;
+	int x,y;
+	float res,ress;
+	float re,z,q,m;
+	if(row==1)
+	{
+		res=1./sqrt(n);
+		ress=sqrt(2./n);
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=0;
+				for(i=0;i<row;i++)
+				{
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;		
+						if(y==0)
+						out[x]+=res*in[y]*(cos(((M_PI)*(j)*(v+1./2.))/n));
+						else
+						out[x]+=ress*in[y]*(cos(((M_PI)*(j)*(v+1./2.))/n));
+					}
+				}
+			}
+				
+		}
+	}
+	else
+	{
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=0;
+				for(i=0;i<row;i++)
+				{
+					re=0;
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;
+						m=(float)in[j*row+i];
+						z=(float)(((float)v+1.0/2.0)*(float)j);
+						q=(float)(M_PI/(float)col);	
+						m=m*(cos(q*z));
+						if(j==0)
+						re+=m/sqrt((float)col);
+						else
+						re+=m*sqrt(2./col);
+					}
+					z=(float)(((float)u+1.0/2.0)*(float)i);
+					q=(float)(M_PI/(float)row);	
+					if(i==0)
+					out[x]+=(re*(cos(z*q)))/sqrt((float)row);
+					else
+					out[x]+=(re*(cos(z*q))*sqrt(2./row));
+				}
+			}
+		}
+	}					
+}
diff --git a/src/c/signalProcessing/transforms/idct/zidcta.c b/src/c/signalProcessing/transforms/idct/zidcta.c
new file mode 100644
index 0000000..cc01c96
--- /dev/null
+++ b/src/c/signalProcessing/transforms/idct/zidcta.c
@@ -0,0 +1,118 @@
+/* Copyright (C) 2016 - 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: Ukasha Noor
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+
+#include "idct.h"
+#include "addition.h"
+#include "types.h"
+#include "doubleComplex.h" 
+#include "multiplication.h"
+/*#include "matrixMultiplication"*/
+/*#include <fftw3.h>*/
+#include <math.h>
+
+void zidcta(doubleComplex *in,int row,int col,doubleComplex *out)
+{
+	int i,j,k,u,v;
+	int n=col;
+	int x,y;
+	double res,ress,vv,ff;
+	double re,z,q,m;
+	doubleComplex accu = DoubleComplex(0, 0);
+	doubleComplex temp,mm,aa,bb;
+	if(row==1)
+	{
+		res=1./sqrt(n);
+		ress=sqrt(2./n);
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=DoubleComplex(0,0);
+				for(i=0;i<row;i++)
+				{
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;		
+						if(y==0)
+						{
+							q=res*(cos(((M_PI)*(j)*(v+1./2.))/n));
+							aa=DoubleComplex(q,0);
+							out[x]=zadds(out[x],zmuls(in[y],aa));
+						}
+						else
+						{
+							q=ress*(cos(((M_PI)*(j)*(v+1./2.))/n));
+							aa=DoubleComplex(q,0);
+							out[x]=zadds(out[x],zmuls(in[y],aa));
+						}
+					}
+				}
+			}
+			
+		}
+	}	
+	else	
+	{
+		for(u=0;u<row;u++)
+		{
+			for(v=0;v<col;v++)
+			{
+				x=v*row+u;
+				out[x]=DoubleComplex(0,0);
+				for(i=0;i<row;i++)
+				{
+					re=0;
+					mm=DoubleComplex(0,0);
+					temp=DoubleComplex(0,0);
+					for(j=0;j<col;j++)
+					{
+						y=row*j+i;
+						mm=in[j*row+i];
+						z=(double)(((double)v+1.0/2.0)*(double)j);
+						q=(double)(M_PI/(double)col);
+						vv=cos(q*z);
+						aa=DoubleComplex(vv,0);	
+						mm=zmuls(mm,aa);
+						if(j==0)
+						{
+							vv=1./sqrt((double)col);
+							aa=DoubleComplex(vv,0);
+							temp=zadds(temp,zmuls(mm,aa));
+						}
+						else
+						{
+							vv=sqrt(2./col);
+							aa=DoubleComplex(vv,0);
+							temp=zadds(temp,zmuls(mm,aa));
+						}
+					}
+					z=(double)(((double)u+1.0/2.0)*(double)i);
+					q=(double)(M_PI/(double)row);	
+					if(i==0)
+					{
+						vv=(cos(z*q))*(1./sqrt(row));
+						aa=DoubleComplex(vv,0);
+						out[x]=zadds(out[x],zmuls(temp,aa));
+					}
+					else
+					{
+						vv=(cos(z*q))*sqrt(2./row);
+						aa=DoubleComplex(vv,0);
+						out[x]=zadds(out[x],zmuls(temp,aa));
+					}
+				}
+			}
+		}
+	}					
+}
-- 
cgit