Diff: util.c

Revision:

0:cb80470434eb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util.c	Tue Oct 28 12:19:42 2014 +0000
@@ -0,0 +1,56 @@
+#include "atmegatron.h"
+
+
+// The Arduino map function.
+long map(long x, long in_min, long in_max, long out_min, long out_max)
+{
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+
+/*int round(double number)
+{
+    return (number >= 0) ? (int)(number + 0.5) : (int)(number - 0.5);
+}*/
+
+
+void randomSeed(unsigned int seed)
+{
+  if (seed != 0)
+  {
+    srand(seed);
+  }
+}
+
+
+// Adapted from Arduino.
+static long random_(long howbig)
+{
+  if (howbig == 0)
+  {
+    return 0;
+  }
+  return rand() % howbig;
+}
+
+
+// Adapted from Arduino.
+long random(long howsmall, long howbig)
+{
+  if (howsmall >= howbig)
+  {
+    return howsmall;
+  }
+  long diff = howbig - howsmall;
+  return random_(diff) + howsmall;
+}
+
+
+void cli(void)
+{
+}
+
+
+void sei(void)
+{
+}