restructure and add ipi texs

2019-11-06 18:24:04 +01:00
parent e21da561fc
commit 8fd8d2a485
155 changed files with 129 additions and 0 deletions
@@ -0,0 +1,42 @@
+#include <iostream>
+
+#include "FloatArray.hh"
+#include "DFA.cc"
+#include "LFA.cc"
+
+void polyshow (FloatArray& f) {
+  for (int i=f.minIndex(); i<=f.maxIndex(); i=i+1)
+    if (f.isMember(i)  && f[i]!=0.0)
+      std::cout << "+" << f[i] << "*x^" << i;
+  std::cout << std::endl;
+}
+
+void polymul (FloatArray& a, FloatArray& b, FloatArray& c) {
+  // Loesche a
+  for (int i=a.minIndex(); i<=a.maxIndex(); i=i+1)
+    if (a.isMember(i))
+      a[i] = 0.0;
+
+  // a = b*c
+  for (int i=b.minIndex(); i<=b.maxIndex(); i=i+1)
+    if (b.isMember(i))
+      for (int j=c.minIndex(); j<=c.maxIndex(); j=j+1)
+        if (c.isMember(j))
+          a[i+j] = a[i+j]+b[i]*c[j];
+}
+
+int main ()
+{
+  // funktioniert mit einer der folgenden Zeilen:
+  // DynamicFloatArray f,g;
+  ListFloatArray f,g;
+    
+  f[0] = 1.0; f[100] = 1.0;
+
+  polymul(g,f,f); 
+  polymul(f,g,g);
+  polymul(g,f,f); 
+  polymul(f,g,g); // f=(1+x^100)^16
+
+  polyshow(f);
+}