diff --git a/build/src/render/translate.c.o b/build/src/render/translate.c.o
index ca6c293..192b981 100644
Binary files a/build/src/render/translate.c.o and b/build/src/render/translate.c.o differ
diff --git a/libfxengine.a b/libfxengine.a
index 259779f..0878c63 100644
Binary files a/libfxengine.a and b/libfxengine.a differ
diff --git a/src/render/bitmap.c b/src/render/bitmap.c
index f953449..c485d45 100644
--- a/src/render/bitmap.c
+++ b/src/render/bitmap.c
@@ -6,11 +6,11 @@ inline uint8_t bitmap_get_pixel_r(const bitmap_rich * bmp, uint32_t x, uint32_t
     if (x >= bmp->size_px_x || y >= bmp->size_px_y)
         return 0;
 
-    const uint32_t indice = y * bmp->size_o_y + x >> 5;
+    const uint32_t indice = y * bmp->size_o_y + (x >> 5);
 
     const uint32_t numero_bit = 31 - x % 32;
 
-    return  ( bmp->layout[indice] | 1 << numero_bit ) << 1 + ( bmp->color[indice] | 1 << numero_bit );
+    return  (( bmp->layout[indice] | 1 << numero_bit ) << 1) + ( bmp->color[indice] | 1 << numero_bit );
 }
 
 
diff --git a/src/render/translate.c b/src/render/translate.c
index b6b203f..a10e4ac 100644
--- a/src/render/translate.c
+++ b/src/render/translate.c
@@ -8,7 +8,7 @@ const double pi2 = pi * 2;
 const double pi_sur_2 = pi / 2;
 
 
-static double reducted_cos(const double a)
+inline double reducted_cos(const double a)
 {
     double u= 1.0;
 	const double a2 = a * a;
@@ -27,19 +27,14 @@ double modulo_2pi(double a)
     return a;
 }
 
-static double cos_recursive(double angle)
-{
-	if (angle<0)
-		return cos_recursive(-angle);
-	if (angle>=pi_sur_2)
-		return -reducted_cos(angle - pi);
-    return reducted_cos(angle); // OK
-}
-
 double cos(double angle)
 {
     angle = modulo_2pi(angle);
-    return cos_recursive(angle);
+    if (angle<0)
+        angle=-angle;
+    if (angle>=pi_sur_2)
+        return -reducted_cos(angle - pi);
+    return reducted_cos(angle);
 }
 
 double sin(double angle)
@@ -120,4 +115,4 @@ void render_set(const double dh, const double dv, const double roulis, const FE_
 
     // assigner delta
     memcpy(&delta, camera, sizeof(FE_integer_position));
-}
\ No newline at end of file
+}