fix math for portability

Author: ianfixes

SampleProjects/TestSomething/test/good-trig.cpp

@@ -11,11 +11,13 @@ unittest(floor)
 
 unittest(cos)
 {
-  assertEqual(1.0, (float)cos(0));
-  assertLess(-0.01, (float)cos(3.141 / 2));
-  assertMore(0.01, (float)cos(3.141 / 2));
-  assertMore(-0.99, (float)cos(3.141));
-  assertLess(-1.01, (float)cos(3.141));
+  assertEqual(1.0, cos(0));
+  assertLess(-0.01, cos(3.141 / 2));
+  assertMore(0.01, cos(3.141 / 2));
+  assertMore(-0.99, cos(PI));
+  assertLess(-1.01, cos(PI));
+  assertLess(-0.01, cos(radians(90)));
+  assertMore(0.01, cos(radians(90)));
 }
 
 unittest_main()

cpp/arduino/AvrMath.cpp

@@ -1,5 +1,5 @@
-//#include <math.h>
 #pragma once
+#include <math.h>
 
 #define constrain(x,l,h) ((x)<(l)?(l):((x)>(h)?(h):(x)))
 #define map(x,inMin,inMax,outMin,outMax) (((x)-(inMin))*((outMax)-(outMin))/((inMax)-(inMin))+outMin)
@@ -18,23 +18,10 @@
 #undef min
 #endif
 #define min(a,b) ((a)<(b)?(a):(b))
-float pow(float, float);
-#define sq(x) ((x)*(x))
-float sqrt(float);
 
-// https://stackoverflow.com/a/26091248/2063546
-#define floor(x) ((x) < (int)(x) ? (int)(x) - 1 : (int)(x))
-#define ceil(x) (0-floor(-(x)))
-// https://stackoverflow.com/a/26342944/2063546
-#define fmod(a,b) ((a)-(b)*floor((a)/(b)))
+#define sq(x) ((x)*(x))
 
 #define radians(deg) ((deg)*DEG_TO_RAD)
 #define degrees(rad) ((rad)*RAD_TO_DEG)
 
 
-// http://www.ganssle.com/approx.htm
-// http://www.ganssle.com/approx/sincos.cpp
-double cos(double);
-double sin(double);
-double tan(double);
-

cpp/arduino/AvrMath.h

@@ -1,4 +1,9 @@
 #pragma once
+
+#ifndef typeof
+#define typeof __typeof__
+#endif
+
 #include "Compare.h"
 
 #define testBehaviorOp(die, desc, rel1, arg1, op, op_name, rel2, arg2) \