First commit

5 files changed, 227 insertions, 0 deletions

diff --git a/2.3-1/src/c/elementaryFunctions/acosd/cacoss.c b/2.3-1/src/c/elementaryFunctions/acosd/cacoss.c
new file mode 100644
index 00000000..97420313
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/acosd/cacoss.c
@@ -0,0 +1,147 @@
+/*

+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab

+ *  Copyright (C) 2007-2008 - INRIA - Bruno JOFRET

+ *  Copyright (C) Bruno Pincon

+ *

+ *  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

+ *

+ */

+

+/*

+ * This fonction is a translation of fortran wacos write by Bruno Pincon <Bruno.Pincon@iecn.u-nancy.fr>

+ *     REFERENCE

+ *        This is a Fortran-77 translation of an algorithm by

+ *        T.E. Hull, T. F. Fairgrieve and P.T.P. Tang which

+ *        appears in their article :

+ *          "Implementing the Complex Arcsine and Arccosine

+ *           Functions Using Exception Handling", ACM, TOMS,

+ *           Vol 23, No. 3, Sept 1997, p. 299-335

+ */

+

+#include "acos.h"

+#include "atan.h"

+#include "log.h"

+#include "log1p.h"

+#include "sqrt.h"

+#include "abs.h"

+#include "lapack.h"

+#include "min.h"

+#include "max.h"

+

+#define localSign(x) (x>0 ? 1.0f : -1.0f)

+

+floatComplex		cacoss(floatComplex z) {

+	static float sfltPi		= 3.1415926535897932384626433f;

+	static float sfltPi_2		= 1.5707963267948966192313216f;

+	static float sfltLn2		= 0.6931471805599453094172321f;

+	static float sfltAcross	= 1.5f;

+	static float sfltBcross	= 0.6417f;

+

+	float fltLsup = ssqrts((float) getOverflowThreshold())/8.0f;

+	float fltLinf = 4.0f * ssqrts((float) getUnderflowThreshold());

+	float fltEpsm = ssqrts((float) getRelativeMachinePrecision());

+

+	float fltAbsReal	= sabss(creals(z));

+	float fltAbsImg		= sabss(cimags(z));

+	float fltSignReal	= localSign(creals(z));

+	float fltSignImg	= localSign(cimags(z));

+

+	float fltR = 0, fltS = 0, fltA = 0, fltB = 0;

+

+	float fltTemp = 0;

+

+	float _pfltReal = 0;

+	float _pfltImg = 0;

+

+	if( min(fltAbsReal, fltAbsImg) > fltLinf && max(fltAbsReal, fltAbsImg) <= fltLsup)

+	  {/* we are in the safe region */

+		fltR = ssqrts( (fltAbsReal + 1 )*(fltAbsReal + 1 ) + fltAbsImg*fltAbsImg);

+		fltS = ssqrts( (fltAbsReal - 1 )*(fltAbsReal - 1 ) + fltAbsImg*fltAbsImg);

+		fltA = 0.5f * ( fltR + fltS );

+		fltB = fltAbsReal / fltA;

+

+

+		/* compute the real part */

+		if(fltB <= sfltBcross)

+			_pfltReal = sacoss(fltB);

+		else if( fltAbsReal <= 1)

+			_pfltReal = satans(ssqrts(0.5f * (fltA + fltAbsReal) * (fltAbsImg*fltAbsImg / (fltR + (fltAbsReal + 1)) + (fltS + (1 - fltAbsReal)))) / fltAbsReal);

+		else

+			_pfltReal = satans((fltAbsImg * ssqrts(0.5f * ((fltA + fltAbsReal) / (fltR + (fltAbsReal + 1)) + (fltA + fltAbsReal) / (fltS + (fltAbsReal - 1))))) / fltAbsReal);

+

+		/* compute the imaginary part */

+		if(fltA <= sfltAcross)

+		{

+			float fltImg1 = 0;

+

+			if(fltAbsReal < 1)

+			  /* Am1 = 0.5d0*((y**2)/(R+(x+1.d0))+(y**2)/(S+(1.d0-x))) */

+				fltImg1 = 0.5f * (fltAbsImg*fltAbsImg / (fltR + (fltAbsReal + 1)) + fltAbsImg*fltAbsImg / (fltS + (1 - fltAbsReal)));

+			else

+			  /* Am1 = 0.5d0*((y**2)/(R+(x+1.d0))+(S+(x-1.d0))) */

+				fltImg1 = 0.5f * (fltAbsImg*fltAbsImg / (fltR + (fltAbsReal + 1)) + (fltS + (fltAbsReal - 1)));

+			/* ai = logp1(Am1 + sqrt(Am1*(A+1.d0))) */

+			fltTemp = fltImg1 + ssqrts(fltImg1 *( fltA + 1));

+			_pfltImg = slog1ps(fltTemp);

+		}

+		else

+		  /* ai = log(A + sqrt(A**2 - 1.d0)) */

+			_pfltImg = slogs(fltA + ssqrts(fltA*fltA - 1));

+	}

+	else

+	  {/* evaluation in the special regions ... */

+		if(fltAbsImg <= fltEpsm * sabss(fltAbsReal - 1))

+		{

+			if(fltAbsReal < 1)

+			{

+				_pfltReal	= sacoss(fltAbsReal);

+				_pfltImg	= fltAbsImg / ssqrts((1 + fltAbsReal) * (1 - fltAbsReal));

+			}

+			else

+			{

+				_pfltReal = 0;

+				if(fltAbsReal <= fltLsup)

+				{

+					fltTemp		= (fltAbsReal - 1) + ssqrts((fltAbsReal - 1) * (fltAbsReal + 1));

+					_pfltImg	= slog1ps(fltTemp);

+				}

+				else

+					_pfltImg	= sfltLn2 + slogs(fltAbsReal);

+			}

+		}

+		else if(fltAbsImg < fltLinf)

+		{

+			_pfltReal	= ssqrts(fltAbsImg);

+			_pfltImg	= _pfltReal;

+		}

+		else if((fltEpsm * fltAbsImg - 1 >= fltAbsReal))

+		{

+			_pfltReal	= sfltPi_2;

+			_pfltImg	= sfltLn2 + slogs(fltAbsImg);

+		}

+		else if(fltAbsReal > 1)

+		{

+			_pfltReal	= satans(fltAbsImg / fltAbsReal);

+			fltTemp		= (fltAbsReal / fltAbsImg)*(fltAbsReal / fltAbsImg);

+			_pfltImg	= sfltLn2 + slogs(fltAbsImg) + 0.5f * slog1ps(fltTemp);

+		}

+		else

+		{

+			float fltTemp2 = ssqrts(1 + fltAbsImg*fltAbsImg);

+			_pfltReal	= sfltPi_2;

+			fltTemp		= 2 * fltAbsImg * (fltAbsImg + fltTemp2);

+			_pfltImg	= 0.5f * slog1ps(fltTemp);

+		}

+	}

+	if(fltSignReal < 0)

+		_pfltReal = sfltPi - _pfltReal;

+

+	if(fltAbsImg != 0 || fltSignReal < 0)

+		_pfltImg = - fltSignImg * _pfltImg;

+

+	return FloatComplex(_pfltReal, _pfltImg);

+}

diff --git a/2.3-1/src/c/elementaryFunctions/acosd/dacosda.c b/2.3-1/src/c/elementaryFunctions/acosd/dacosda.c
new file mode 100644
index 00000000..2e95e9fc
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/acosd/dacosda.c
@@ -0,0 +1,22 @@
+// 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
+// Organization: FOSSEE, IIT Bombay
+// Author: Ashish Kamble
+// Email: toolbox@scilab.in
+
+#include <math.h>
+#include "acosd.h"
+
+void dacosda(double* x, int size, double* y) 
+{
+  int i = 0;
+  for (i = 0; i < size; ++i) 
+  {
+    y[i] = dacosds(x[i]);
+  }
+}
diff --git a/2.3-1/src/c/elementaryFunctions/acosd/dacosds.c b/2.3-1/src/c/elementaryFunctions/acosd/dacosds.c
new file mode 100644
index 00000000..8f59dab6
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/acosd/dacosds.c
@@ -0,0 +1,18 @@
+// 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
+// Organization: FOSSEE, IIT Bombay
+// Author: Ashish Kamble
+// Email: toolbox@scilab.in
+
+#include <math.h>
+#include "acosd.h"
+
+double dacosds(double x) 
+{
+  return ((acos(x)*180)/3.14159265359);
+}
diff --git a/2.3-1/src/c/elementaryFunctions/acosd/sacosda.c b/2.3-1/src/c/elementaryFunctions/acosd/sacosda.c
new file mode 100644
index 00000000..440d9dc3
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/acosd/sacosda.c
@@ -0,0 +1,22 @@
+// 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
+// Organization: FOSSEE, IIT Bombay
+// Author: Ashish Kamble
+// Email: toolbox@scilab.in
+
+#include <math.h>
+#include "acosd.h"
+
+void sacosda(float* x, int size, float* y) 
+{
+  int i = 0;
+  for (i = 0; i < size; ++i) 
+  {
+    y[i] = sacosds(x[i]);
+  }
+}
diff --git a/2.3-1/src/c/elementaryFunctions/acosd/sacosds.c b/2.3-1/src/c/elementaryFunctions/acosd/sacosds.c
new file mode 100644
index 00000000..c166ff0e
--- /dev/null
+++ b/2.3-1/src/c/elementaryFunctions/acosd/sacosds.c
@@ -0,0 +1,18 @@
+// 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
+// Organization: FOSSEE, IIT Bombay
+// Author: Ashish Kamble
+// Email: toolbox@scilab.in
+
+#include <math.h>
+#include "acosd.h"
+
+double sacosds(float x) 
+{
+  return ((acos(x)*180)/3.14159265359);
+}