diff --git a/src/utils.c b/src/utils.c
index 86d3056..3f39bb1 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -194,10 +194,10 @@ float m_tan(float x)
 //     return ((func(a+h)-func(a))/h);
 // }
 
-// euler method in one dimension
+// newton method in one dimension
 // takes a function and find one of the root
 // return the status 0 if success >0 if error
-int m_euler_method(float (*func)(float, float), float param, float startsAt, float* resPtr)
+int m_newton_method(float (*func)(float, float), float param, float startsAt, float* resPtr)
 {
     // (x-b)f'(b)+f(b) = 0
     // xf'(b)-bf'(b)+f(b) = 0
@@ -217,7 +217,7 @@ int m_euler_method(float (*func)(float, float), float param, float startsAt, flo
             return 0;
         }
         if (runs > 100) {
-            printf("ERR: euler methods failed, coup dur pour euler \n");
+            printf("ERR: newton methods failed, coup dur pour newton \n");
             return 100;
         }
         cursor = newCursor;
@@ -235,7 +235,7 @@ float m_sqrt_equation(float x, float y)
 float m_sqrt(float x)
 {
     float res = 0;
-    m_euler_method(&m_sqrt_equation, x, 4, &res);
+    m_newton_method(&m_sqrt_equation, x, 4, &res);
 
     return res;
 }
@@ -248,7 +248,7 @@ float m_ln_equation(float x, float y)
 float m_ln(float x)
 {
     float res = 0;
-    m_euler_method(&m_ln_equation, x, 4, &res);
+    m_newton_method(&m_ln_equation, x, 4, &res);
 
     return res;
 }
diff --git a/src/utils.h b/src/utils.h
index 6cd8d25..13a5c72 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -11,6 +11,7 @@
 // define custom type (unsigned char)
 typedef unsigned char byte;
 
+
 int get_int_rep_from_float(float ft);
 
 float get_float_from_int_rep(int representation);
@@ -27,6 +28,9 @@ float m_float_modulus(float a, float mod);
 
 int m_factorial(int x);
 
+
+int m_newton_method(float (*func)(float, float), float param, float startsAt, float* resPtr);
+
 float m_float_pow(float base, int exponent);
 
 float m_sqrt(float x);
@@ -48,6 +52,7 @@ int is_full_of_space(char* str);
 void str_extract(char* res, char* subject, int initial, int length);
 
 byte str_needle_at_pos(char* needle, char* subject, int pos);
+
 byte str_starts_with(char* needle, char* subject);
 
 void trim_space(char* dst, char* subject);