Mac binaries

[jabaws.git] / website / archive / binaries / mac / src / disembl / Tisean_3.0.1 / source_c / routines / invert_matrix.c

diff --git a/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_c/routines/invert_matrix.c b/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_c/routines/invert_matrix.c
new file mode 100644 (file)
index 0000000..e198fb6
--- /dev/null
+++ b/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_c/routines/invert_matrix.c
@@ -0,0 +1,65 @@
+/*
+ *   This file is part of TISEAN
+ *
+ *   Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
+ *
+ *   TISEAN is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   TISEAN is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with TISEAN; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+/* Author: Rainer Hegger Last modified: Sep 5, 2004*/
+/* Changes: 
+ * Sep 5, 2004: added the extern check_alloc line
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+
+extern void check_alloc(void*);
+
+double **invert_matrix(double **mat,unsigned int size)
+{
+  int i,j,k;
+  double **hmat,**imat,*vec;
+  extern void solvele(double**,double*,unsigned int);
+
+  check_alloc(hmat=(double**)malloc(sizeof(double*)*size));
+  for (i=0;i<size;i++) {
+    check_alloc(hmat[i]=(double*)malloc(sizeof(double)*size));
+  }
+
+  check_alloc(imat=(double**)malloc(sizeof(double*)*size));
+  for (i=0;i<size;i++) {
+    check_alloc(imat[i]=(double*)malloc(sizeof(double)*size));
+  }
+
+  check_alloc(vec=(double*)malloc(sizeof(double)*size));
+  
+  for (i=0;i<size;i++) {
+    for (j=0;j<size;j++) {
+      vec[j]=(i==j)?1.0:0.0;
+      for (k=0;k<size;k++)
+       hmat[j][k]=mat[j][k];
+    }
+    solvele(hmat,vec,size);
+    for (j=0;j<size;j++)
+      imat[j][i]=vec[j];
+  }
+  
+  free(vec);
+  for (i=0;i<size;i++)
+    free(hmat[i]);
+  free(hmat);
+
+  return imat;
+}