stanardize kernel/util

src/includes/kernel/util.c

@@ -1,5 +1,5 @@
 /**
-arm-016-util.c
+util.c
 */
 #include "util.h"
 
@@ -40,8 +40,19 @@ void setColor(volatile unsigned char* fb, colour_t pixel, long x, long y, long p
     }
 }
 
+double sin(double x)
+{
+    double x2 = x * x;
+    if (x < PI)
+        return (((((-0.0000000205342856289746600727*x2 + 0.00000270405218307799040084)*x2 - 0.000198125763417806681909)*x2 + 0.00833255814755188010464)*x2 - 0.166665772196961623983)*x2 + 0.999999707044156546685)*x;
 
+    else if (x <= PI * 2) return (-sin(x - PI));
 
+    while (x > PI * 2)
+        x -= PI * 2;
+
+    return sin(x);
+}
 
 
 

src/includes/kernel/util.h

@@ -3,12 +3,10 @@ arm-016-util.h
 */
 
 
-#ifndef arm_016_util
-#define arm_016_util
+#ifndef RPI_UTIL_H
+#define RPI_UTIL_H
+
 #define PI 3.14159265359
-
-#include "image_data.h"
-
 #define SCREEN_WIDTH    1920
 #define SCREEN_HEIGHT   1080
 #define SCREEN_DEPTH    24      /* 16 or 32-bit */
@@ -23,9 +21,7 @@ typedef struct {
     } colour_t;
 
 
-//extern double pow(double, int);
-//extern double sin(double);
 extern void setColor(volatile unsigned char* fb, colour_t pixel, long x, long y, long pitch);
-
+extern double sin(double in);
 
 #endif

src/includes/rpi/interrupts.c

@@ -109,7 +109,6 @@ void __attribute__((interrupt("ABORT"))) data_abort_vector(void)
 */
 void __attribute__((interrupt("IRQ"))) interrupt_vector(void)
 {
-    static int lit = 0;
     static int ticks = 0;
     static int seconds = 0;