refactoring: changing functions for double types

src/exponent.c

@@ -2,36 +2,22 @@
 
 #include "exponent.h"
 
-int expI(unsigned int e, int num){
-    int prod = 1;
-    if(e==0){
+double expI(double e, double num){
+    double prod = 1.0;
+    if(e==0.0){
         return 1;
     }else{
-        for(int i = 1; i <=e; i++){
+        for(int i = 1; i <= (int) e; i++){
             prod *= num;
         }
         return prod;
     }
 }
 
-float expIN(int e, int num){
+double expIN(double e, double num){
     if(e>0){
-        return (float) expI(e, num);
+        return expI(e, num);
     }else{
-        printf("%d, %d\n", e, num);
-        printf("%f\n", 1.0 / (float) expI((e*-1), num));
-        return  (1.0 / (float) expI((e*-1), num));
-    }
-}
-
-float expF(int e, float num){
-    float prod = 1;
-    if(e==0){
-        return 1;
-    }else{
-        for(int i = 1; i <=e; i++){
-            prod *= num;
-        }
-        return prod;
+        return  (1.0 / expI((e*-1), num));
     }
 }

src/exponent.h

@@ -1,8 +1,7 @@
 #ifndef EXPONENT_H
 #define EXPONENT_H
 
-int expI(unsigned int e, int num);
-float expIN(int e, int num);
-float expF(int e, float num);
+double expI(double e, double num);
+double expIN(double e, double num);
 
 #endif // exponent.h

test/test_exponent.c

@@ -12,24 +12,24 @@ void tearDown(void)
 {
 }
 
-void test_IntegerExponent_ForPositiveExponent(void){
+void test_DoubleBase_ForPositiveExponent(void){
     int r1, r2, r3;
 
-    r1 = expI(2, -2);
-    r2 = expI(3, -3);
-    r3 = expI(4, 5);
+    r1 = expI(2.0, -2.0);
+    r2 = expI(3.0, -3.0);
+    r3 = expI(4.0, 5.0);
 
-    TEST_ASSERT_EQUAL_INT(4, r1);
-    TEST_ASSERT_EQUAL_INT(-27, r2);
-    TEST_ASSERT_EQUAL_INT(625, r3);  
+    TEST_ASSERT_EQUAL_INT(4.0, r1);
+    TEST_ASSERT_EQUAL_INT(-27.0, r2);
+    TEST_ASSERT_EQUAL_INT(625.0, r3);  
 }
 
-void test_IntegerExponent_ForNegativeExponent(void){
+void test_DoubleBase_ForNegativeExponent(void){
     float r1, r2, r3;
 
-    r1 = expIN(-1, 2);
-    r2 = expIN(-3, -3);
-    r3 = expIN(-2, -2);
+    r1 = expIN(-1.0, 2.0);
+    r2 = expIN(-3.0, -3.0);
+    r3 = expIN(-2.0, -2.0);
 
     printf("Result 1: %d\n", r1);
     printf("Result 2: %d\n", r2);