Merged Ankit's work, signal processing and string functions

12 files changed, 381 insertions, 34 deletions

diff --git a/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/dsinca.c b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/dsinca.c
new file mode 100644
index 00000000..0cd24e96
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/dsinca.c
@@ -0,0 +1,46 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+#include<stdio.h>
+#include<math.h>
+#include "sinc.h"
+#define PI 3.14159265358979
+void dsinca(double* sample,int size,double* oup)
+{
+	int j;
+	for(j=0;j<size;j++)
+	{
+	if(sample[j]==0)
+	{
+	oup[j]=1;
+	}
+	else
+	{
+	oup[j]=(sin(sample[j]))/(sample[j]);
+	}
+	}
+}
+/*
+int main()
+{
+	int n;
+	printf("Enter the length of the array");
+	scanf("%d",&n);
+	double arr[100000];
+	int i;
+	printf("Now enter the element of the array");
+	for(i=0;i<n;i++)
+	{
+	scanf("%ld",&arr[i]);
+	}
+	sinc(arr[],n);
+}
+*/
diff --git a/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/int_sinc.h b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/int_sinc.h
new file mode 100644
index 00000000..0dc969de
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/int_sinc.h
@@ -0,0 +1,18 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __INT_SINC_H__
+#define __INT_SINC_H__
+
+#define d2sincd2(sample,size,oup) dsinca(sample,size,oup)
+
+#endif /* !__INT_SINC_H__! */
diff --git a/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/sinc.h b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/sinc.h
new file mode 100644
index 00000000..6a5c315b
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/sinc.h
@@ -0,0 +1,27 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __SINC_H__
+#define __SINC_H__
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dsinca(double* sample,int size,double* oup);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* __SINC_H__ */ 
diff --git a/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/zsinca.c b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/zsinca.c
new file mode 100644
index 00000000..ad7d095b
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/Trigonometry/sinc/zsinca.c
@@ -0,0 +1,31 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+#include<stdio.h>
+#include<math.h>
+#include "sinc.h"
+#include "sin.h"
+#include "doubleComplex.h"
+void zsinca(doubleComplex* sample,int size,doubleComplex* oup)
+{
+	int j;
+	for(j=0;j<size;j++)
+	{
+	if(sample[j]==0)
+	{
+	oup[j]==DoubleComplex(1,0);
+	}
+	else
+	{
+	oup[j]=zsins(sample[j])/sample[j];
+	}
+	}
+}
diff --git a/2.3-1/src/c/elementaryFunctions/discrete_mathematics/gcd/u8gcda.c b/2.3-1/src/c/elementaryFunctions/discrete_mathematics/gcd/u8gcda.c
new file mode 100644
index 00000000..3d586232
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/discrete_mathematics/gcd/u8gcda.c
@@ -0,0 +1,60 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+#include<stdio.h>
+/* This is the "gcd" function , which takes two input. first
+  one is the array and the second one is the length of the array.
+  Now to calculate the gcd of two elements we fin the maximum of
+  the two elements, and then iterate from maximum value down to 1,
+  and check whether the particular value divides the two elements.
+  And in this way we can calculate the gcd of the whole array.
+*/
+#include "gcd.h"
+uint8 u8gcdua(uint8* in,int size)
+{
+
+  int temp;
+  if(size==1)
+  {
+    temp=*in;
+  }
+  else
+  {
+  int x=*in;
+  int y=*(in+1);
+  int max=(x>y)?x:y;
+  for(int i=max;i>=1;i--)
+  {
+    if(x%i==0 && y%i==0)
+    {
+      temp=i;
+      break;
+    }
+  }
+  for(int j=2;j<size;j++)
+  {
+    x=temp;
+    y=*(in+j);
+    max=(x>y)?x:y;
+    for(int i=max;i>=1;i--)
+    {
+      if(x%i==0 && y%i==0)
+      {
+        temp=i;
+        break;
+      }
+    }
+  }
+}
+
+  return temp;
+}
+
diff --git a/2.3-1/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c b/2.3-1/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c
new file mode 100644
index 00000000..56856e43
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/discrete_mathematics/lcm/u8lcma.c
@@ -0,0 +1,68 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+#include<stdio.h>
+/* This is the "lcm" function, accepting two inputs which are the array of integers
+    and second the size of the array. The algorithm works like this:
+    We take a temproary variable and store the lcm of the first two elements of the
+    array in it. Now using this temproary variable we recursively fin the lcm of
+    the whole array.
+    Now to fin the lcm of two elements we fin the maximum of the two elements and
+    check whether it is divisible by both the elements, if the condition is true we
+    get the lcm, else increase the maximum value by itself unless we get the lcm.
+*/
+#include "lcm.h"
+uint8 u8lcma(uint8* in,int size)
+{
+    long long int lcm_temp;
+    if(size==1)
+    {
+    lcm_temp=*in;
+    }
+    else
+    {
+    
+    int x1=*in;
+    int x2=*(in+1);
+    long long int max=(x1>x2)?x1:x2;
+    long long int i=max;
+    while(1)
+    {
+        if(i%x1==0 && i%x2==0)
+        {
+        lcm_temp=i;
+        break;
+        }
+        else
+        i+=max;
+    }
+    for(int j=2;j<size;j++)
+    {
+    x1=lcm_temp;
+    x2=*(in+j);
+    max=(x1>x2)?x1:x2;
+    i=max;
+    while(1)
+    {
+        if(i%x1==0 && i%x2==0)
+        {
+        lcm_temp=i;
+        break;
+        }
+        else
+        i+=max;
+    }
+    }
+    
+    }
+  return lcm_temp;
+}
+
diff --git a/2.3-1/src/c/elementaryFunctions/includes/gcd.h b/2.3-1/src/c/elementaryFunctions/includes/gcd.h
index eb75c973..179eea0e 100644
--- a/2.3-1/src/c/elementaryFunctions/includes/gcd.h
+++ b/2.3-1/src/c/elementaryFunctions/includes/gcd.h
@@ -1,31 +1,26 @@
-/*
- *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
- *  Copyright (C) 2007-2008 - INRIA - Bruno JOFRET
- *
- *  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
- * Author: Ukasha Noor
- *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
- *
- */
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
 #ifndef __GCD_H__
 #define __GCD_H__
-
 #include "types.h"
 
-#ifdef  __cplusplus
-extern "C" {
-#endif
-
-int8 u8gcds(int8 *in,int size);
+ #ifdef __cplusplus
+ extern "C"{
+ #endif
 
-void dgcda(double *in,int size,double *out);
+uint8 u8gcda(uint8* in,int size);
 
-#ifdef  __cplusplus
-} /* extern "C" */
-#endif
+ #ifdef __cplusplus
+ } /* extern "C" */
+ #endif
 
-#endif
+#endif /*__GCD_H__*/
diff --git a/2.3-1/src/c/elementaryFunctions/includes/lcm.h b/2.3-1/src/c/elementaryFunctions/includes/lcm.h
new file mode 100644
index 00000000..3a3e66fb
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/includes/lcm.h
@@ -0,0 +1,27 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+#ifndef __LCM_H__
+#define __LCM_H__
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+uint8 u8lcma(uint8* in,int size);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*__LCM_H__*/
+
diff --git a/2.3-1/src/c/elementaryFunctions/includes/sinc.h b/2.3-1/src/c/elementaryFunctions/includes/sinc.h
new file mode 100644
index 00000000..8bc98d28
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/includes/sinc.h
@@ -0,0 +1,29 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __SINC_H__
+#define __SINC_H__
+#include "types.h"
+#include "doubleComplex.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dsinca(double* sample,int size,double* oup);
+void zsinca(doubleComplex* sample,int size,doubleComplex* oup);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* __SINC_H__ */ 
diff --git a/2.3-1/src/c/elementaryFunctions/interfaces/int_gcd.h b/2.3-1/src/c/elementaryFunctions/interfaces/int_gcd.h
index c2135b70..f3e117c5 100644
--- a/2.3-1/src/c/elementaryFunctions/interfaces/int_gcd.h
+++ b/2.3-1/src/c/elementaryFunctions/interfaces/int_gcd.h
@@ -1,25 +1,25 @@
-/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+ /* 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
+ Author: Ankit Raj
  Organization: FOSSEE, IIT Bombay
  Email: toolbox@scilab.in
-*/
-
-/* THIS IS AN AUTOMATICALLY GENERATED FILE : DO NOT EDIT BY HAND. */
-
+ */
 #ifndef __INT_GCD_H__
 #define __INT_GCD_H__
 
-#include "gcd.h"
-
-#define u82gcdu80(in,size)			u8gcds(in,size)
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
 
-#define d2gcdd2(in,size,out)                    dgcda(in,size[0]*size[1],out)
+#define u82gcdu80(in,size) u8gcda(in,size[1])
 
-#endif
+ #ifdef __cplusplus
+ } /* extern "C" */
+ #endif
 
+#endif /*__INT_GCD_H__*/
diff --git a/2.3-1/src/c/elementaryFunctions/interfaces/int_lcm.h b/2.3-1/src/c/elementaryFunctions/interfaces/int_lcm.h
new file mode 100644
index 00000000..2ef1a081
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/interfaces/int_lcm.h
@@ -0,0 +1,27 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+
+
+#ifndef __INT_LCM_H__
+#define __INT_LCM_H__
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+
+#define u82lcmu80(in,size) u8lcma(in,size[1])
+
+ #ifdef __cplusplus
+ } /* extern "C" */
+ #endif
+
+#endif /* !__INT_LCM_H__ */
diff --git a/2.3-1/src/c/elementaryFunctions/interfaces/int_sinc.h b/2.3-1/src/c/elementaryFunctions/interfaces/int_sinc.h
new file mode 100644
index 00000000..35a519db
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/interfaces/int_sinc.h
@@ -0,0 +1,19 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __INT_SINC_H__
+#define __INT_SINC_H__
+
+#define d2sincd2(sample,size,oup) dsinca(sample,size[1],oup)
+#define z2sincz2(sample,size,oup) zsinca(sample,size[1],oup)
+
+#endif /* !__INT_SINC_H__! */