diff --git a/fx_s2308_longlong.c b/fx_s2308_longlong.c
index c274a357a768bb8ee22e430335ff316b1b260881..a242072a100dec4cab8b67999d209efff2d02d48 100644
--- a/fx_s2308_longlong.c
+++ b/fx_s2308_longlong.c
@@ -16,7 +16,7 @@ const fx_s2308 fx_s2308_SinTable[92] =
     };
 
 
-fx_s2308 fx_s2308_sine(fx_s2308 fa)
+fx_s2308 fx_s2308_sind(fx_s2308 fa)
 {
     int sign = 1;   
     fixed32 ret0, diff;
@@ -37,5 +37,5 @@ fx_s2308 fx_s2308_sine(fx_s2308 fa)
     idx = fa>>8; 
     ret0 = fx_s2308_SinTable[idx]; 
     diff = fx_s2308_SinTable[idx+1]-ret0;
-    return ( sign *( ret0 + ((diff*(fa&0xFFFF))>>8))); 
+    return ( sign *( ret0 + ((diff*(fa&0x00FF))>>8))); 
 }
diff --git a/fx_s2308_longlong.h b/fx_s2308_longlong.h
index cce6b747b79afdcccfedaec865c296d47210576f..39ae85a41a61653aea72286a3ce4ea17bb112f92 100644
--- a/fx_s2308_longlong.h
+++ b/fx_s2308_longlong.h
@@ -13,6 +13,6 @@
 typedef int fx_s2308;
 typedef long fixed32;
 
-fx_s2308 fx32_sind(fx_s2308 fa);
+fx_s2308 fx_s2308_sind(fx_s2308 fa);
 
 
diff --git a/test.c b/test.c
index 40924ab2235630eb949fc6d52cf758c5b145471b..fa2e63bcf44e2d94a5d9c73d3a045315f3baffd1 100644
--- a/test.c
+++ b/test.c
@@ -1,52 +1,43 @@
 #include <stdio.h>
+#include <math.h>
 #include "fx_s2308_double.h"
 #include "fx_s2308_longlong.h"
 
 int main() {
-	fx_s2308 a = 2000;
-	fx_s2308 b = 1000;
+
+	double a,b;
+	fx_s2308 f_a,f_b;
+
+	printf("\n======STEP 1: fx_s2308 double Test=======\n");
+	printf("Please enter two double number: ");
+	scanf("%lf %lf", &a, &b);
+	f_a=DOUBLE_TO_FX(a);
+	f_b=DOUBLE_TO_FX(b);
+	printf("\n\t====== Calculation =======\n");
+	printf("\n\t 1. Add: Exact answer: %lf, Fixed Point Result: %lf\n", a+b, FX_TO_DOUBLE(FX_ADD(f_a,f_b)));
+	printf("\n\t 2. Subtraction: Exact answer: %lf, Fixed Point Result: %lf\n", a-b, FX_TO_DOUBLE(FX_SUB(f_a,f_b)));
+	printf("\n\t 3. Multiplication: Exact answer: %lf, Fixed Point Result: %lf\n", a*b, FX_TO_DOUBLE(FX_MUL(f_a,f_b)));
+	printf("\n\t 4. Division: Exact answer: %lf, Fixed Point Result: %lf\n", a/b, FX_TO_DOUBLE(FX_DIV(f_a,f_b)));
 	
-	printf("\n===Calculation: Addition===\n");
-	printf("%d + %d = %d\n",a,b,FX_ADD(a,b));
-	printf("\n===Calculation: Subtraction===\n");
-	printf("%d - %d = %d\n",a,b,FX_SUB(a,b));
-	printf("\n===Calculation: Multiplication===\n");
-	printf("%d * %d = %d\n",a,b,FX_MUL(a,b));
-	printf("\n===Calculation: Division===\n");
-	printf("%d / %d = %d\n",a,b,FX_DIV(a,b));
-
-	printf("\n===Function: Sine===\n");
-	double a1=30.0;
-	fx_s2308 f_a1=DOUBLE_TO_FX(a1);
-	fx_s2308 sine_a1=fx_s2308_double_sine(f_a1);
-	printf("sine(%f)의 fx_2308 값: %d, Double로 변환: %lf\n",a1,f_a1,FX_TO_DOUBLE(sine_a1));
-
-	printf("\n===Function: Sqrt===\n");
-	double a2=100.0;
-	fx_s2308 f_a2=DOUBLE_TO_FX(a2);
-	fx_s2308 sqrt_a2=fx_s2308_double_sqrt(f_a2);
-	printf("sqrt(%f)의 fx_2308 값: %d Double로 변환: %lf\n",a2,f_a2,FX_TO_DOUBLE(sqrt_a2));
-	printf("\n===Function: Power===\n");
-	double a3=64.0;
-	fx_s2308 f_a3=DOUBLE_TO_FX(a3);
-	fx_s2308 pow_a3=fx_s2308_double_pow(f_a3,2.0);
-	printf("%f의 2.0 제곱의 fx_2308 값: %d, Double로 변환: %lf\n",a3,f_a3,FX_TO_DOUBLE(pow_a3));
-
-	printf("\n===Conversion: fx to double===\n");
-	printf("fx_s2308 %d is changed into double %lf\n", a, FX_TO_DOUBLE(a));
-	printf("\n===Conversion: fx to float===\n");
-	printf("fx_s2308 %d is changed into float %f\n", a, FX_TO_FLOAT(a));
-	printf("\n===Conversion: fx to int===\n");
-	printf("fx_s2308 %d is changed into double %d\n", a, FX_TO_INT(a));
-	printf("\n===Conversion: fx to short===\n");
-	printf("fx_s2308 %d is changed into double %d\n", a, FX_TO_SHORT(a));
-
-	printf("\n===Constant: PI===\n");
-	printf("PI의 fx_2308 값: %d\n",FX_PI);
-	printf("\n===Constant: Inverse PI===\n");
-	printf("1/PI의 fx_2308 값: %d\n",FX_INV_PI);
+	printf("\n\t====== Function =======\n");
+	printf("\n\t 1. Sine(%lf): Exact answer: %lf, Fixed Point Result: %lf\n", a, sin(a*(PI/180)), FX_TO_DOUBLE(fx_s2308_double_sine(f_a)));
+	printf("\n\t 2. Sqrt(%lf): Exact answer: %lf, Fixed Point Result: %lf\n", a, sqrt(a), FX_TO_DOUBLE(fx_s2308_double_sqrt(f_a)));
+	printf("\n\t 3. Power(%lf,2): Exact answer: %lf, Fixed Point Result: %lf\n", a, pow(a,2), FX_TO_DOUBLE(fx_s2308_double_pow(f_a,2)));
+
+	printf("\n\t====== Conversion =======\n");
+	printf("\n\t 1. Fx to Double: fx_s2308 %d is changed into double %lf\n", f_a, FX_TO_DOUBLE(f_a));
+	printf("\n\t 2. Fx to Float: fx_s2308 %d is changed into float %f\n", f_a, FX_TO_FLOAT(f_a));
+	printf("\n\t 3. Fx to Int: fx_s2308 %d is changed into int %d\n", f_a, FX_TO_INT(f_a));
+	printf("\n\t 4. Fx to Short: fx_s2308 %d is changed into short %hd\n", f_a, FX_TO_SHORT(f_a));
+
+	printf("\n\t====== Constant =======\n");
+	printf("\n\t 1. PI: PI to fx_2308: %d\n",FX_PI);
+	printf("\n\t 2. 1/PI: 1/PI to fx_2308: %d\n",FX_INV_PI);
 
 
+	printf("\n======STEP 2: fx_s2308 long long Test=======\n");
+	printf("Please enter two double: ");
+	getchar();
     double da;
     double db;
     scanf("%lf %lf", &da, &db);
@@ -57,18 +48,28 @@ int main() {
     fb=DOUBLE_TO_FX(db);
     
     fc=fx_2308_l_mul(fa,fb);
+	printf("\n\t====== Multiplication =======\n");
+	printf("\n\tmul1: Exact answer = %f func result = %f, error = %f\n", da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
+	fc=fx_2308_l_mul2(fa,fb);
+	printf("\n\tmul2: Exact answer = %f func result = %f, error = %f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
+	fc=fx_2308_l_mul3(fa,fb);
+	printf("\n\tmul3:  Exact answer = %f func result = %f, error = %f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
+	fc=fx_2308_l_mul4(fa,fb);
+	printf("\n\tmul4: Exact answer = %f func result = %f, error = %f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
+
+	printf("\n\t====== Division =======\n");
+	fc=fx_s2308_l_div1(fa,fb);
+	printf("\n\t\tdiv1: Exact answer = %f func result = %f, error = %f\n",da/db, FX_TO_DOUBLE(fc), da/db-FX_TO_DOUBLE(fc));
+	fc=fx_s2308_l_div2(fa,fb);
+	printf("\n\tdiv2: Exact answer = %f func result = %f, error = %f\n",da/db, FX_TO_DOUBLE(fc), da/db-FX_TO_DOUBLE(fc));
+
+	printf("\n\t====== Sine =======\n");
+	printf("\n\t fx_s2308 long long sine 30 = %lf", FX_TO_DOUBLE(fx_s2308_sind(DOUBLE_TO_FX(30))));
+
+
 
-   printf("Exact answer=%f func result =%f, error=%f\n", da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
 
-   fc=fx_2308_l_mul2(fa,fb);
-   
-   printf("Exact answer = %f func result =%f, error=%f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
-   
-   fc=fx_2308_l_mul3(fa,fb);
-   printf("Exact answer = %f func result =%f, error=%f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));
 
-   fc=fx_2308_l_mul4(fa,fb);
-   printf("Exact answer = %f func result =%f, error=%f\n",da*db, FX_TO_DOUBLE(fc), da*db-FX_TO_DOUBLE(fc));