Merge pull request #33 from f1bi1n/master

0f1, abgabe

1 files changed, 16 insertions, 8 deletions

diff --git a/buch/papers/0f1/listings/kettenbruchRekursion.c b/buch/papers/0f1/listings/kettenbruchRekursion.c
index 958d4e1..3caaf43 100644
--- a/buch/papers/0f1/listings/kettenbruchRekursion.c
+++ b/buch/papers/0f1/listings/kettenbruchRekursion.c
@@ -1,19 +1,27 @@
-static double fractionIter0f1(const double b0, const double z, unsigned int n)

+/**

+  * @brief Calculates the Hypergeometric Function 0F1(;c;z)

+  * @param c in 0F1(;c;z)

+  * @param z in 0F1(;c;z)

+  * @param k number of itertions (precision)

+  * @return Result

+  */

+static double fractionIter0f1(const double c, const double z, unsigned int k)

 {

+    //declaration

     double a = 0.0;

     double b = 0.0;

-    double abn = 0.0;

+    double abk = 0.0;

     double temp = 0.0;

 

-    for (; n > 0; --n)

+    for (; k > 0; --k)

     {

-        abn = z / (n * ((n - 1) + b0));  //abn = ak, bk

+        abk = z / (k * ((k - 1) + c));  //abk = ak, bk

         

-        a = n > 1 ? (1 + abn) : 1;  //a0, a1

-        b = n > 1 ? -abn : abn;     //b1

+        a = k > 1 ? (1 + abk) : 1;      //a0, a1

+        b = k > 1 ? -abk : abk;         //b1

 

-        temp = b / (a + temp); 

+        temp = b / (a + temp);          //bk / (ak + last result)

     }

 

-    return a + temp;   //a0 + temp

+    return a + temp;                    //a0 + temp

 }
\ No newline at end of file