From b34a590c548aac53f2c269b482bc64cdedfe7ed3 Mon Sep 17 00:00:00 2001
From: Jonas Zitzmann <jonas-caspar.zitzmann1@informatik.hs-fulda.de>
Date: Thu, 8 Feb 2024 17:31:18 +0100
Subject: [PATCH] add logarithmic Function

---
 src/logarithmicFunctions.c       | 18 ++++++++++++++++++
 src/logarithmicFunctions.h       |  6 ++++++
 test/test_logarithmicFunctions.c | 18 ++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 src/logarithmicFunctions.c
 create mode 100644 src/logarithmicFunctions.h
 create mode 100644 test/test_logarithmicFunctions.c

diff --git a/src/logarithmicFunctions.c b/src/logarithmicFunctions.c
new file mode 100644
index 0000000..e940cb5
--- /dev/null
+++ b/src/logarithmicFunctions.c
@@ -0,0 +1,18 @@
+#include "logarithmicFunctions.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+double* logarithm_two_integer(int base, int num){
+    if(base <= 1 || num <= 0){
+        return NULL;
+    }
+
+    double* result = (double*)malloc(sizeof(double));
+    if (result == NULL) {
+        return NULL;
+    }
+
+    *result = log(num) / log(base);
+    return result;
+}
diff --git a/src/logarithmicFunctions.h b/src/logarithmicFunctions.h
new file mode 100644
index 0000000..c13f29d
--- /dev/null
+++ b/src/logarithmicFunctions.h
@@ -0,0 +1,6 @@
+#ifndef THEADMIRALS_LOGARITHMICFUNCTIONS_H
+#define THEADMIRALS_LOGARITHMICFUNCTIONS_H
+
+double* logarithm_two_integer(int base, int num);
+
+#endif //THEADMIRALS_LOGARITHMICFUNCTIONS_H
diff --git a/test/test_logarithmicFunctions.c b/test/test_logarithmicFunctions.c
new file mode 100644
index 0000000..512696e
--- /dev/null
+++ b/test/test_logarithmicFunctions.c
@@ -0,0 +1,18 @@
+#include "../src/logarithmicFunctions.h"
+#include "unity.h"
+#include "limits.h"
+
+void setUp(void) {
+    // set stuff up here
+}
+
+void tearDown(void) {
+    // clean stuff up here
+}
+
+void test_logarithmicFunctions_logarithmiccalculation(void){
+    double expectedResult = 3.000000;
+    double* result;
+    result = logarithm_two_integer(2,8);
+    TEST_ASSERT_EQUAL_DOUBLE(expectedResult, *result);
+}
\ No newline at end of file