Split Math.c into smaller files

Friend said that Math.c was too big and complicated.

src/Math/Box3f.c

@@ -0,0 +1,75 @@
+#include <BH/Math.h>
+#include <string.h>
+
+
+#define EPSILON 0.00001f
+#define PI      3.14159265358979323846f
+
+
+void BH_Box3fUnion(const float *aMin,
+                   const float *aMax,
+                   const float *bMin,
+                   const float *bMax,
+                   float *outMin,
+                   float *outMax)
+{
+    BH_Vec3fMin(aMin, bMin, outMin);
+    BH_Vec3fMax(aMax, bMax, outMax);
+}
+
+
+int BH_Box3fIntersect(const float *aMin,
+                      const float *aMax,
+                      const float *bMin,
+                      const float *bMax,
+                      float *outMin,
+                      float *outMax)
+{
+    BH_Vec3fMax(aMin, bMin, outMin);
+    BH_Vec3fMin(aMax, bMax, outMax);
+
+    if (outMin[0] >= outMax[0] || outMin[1] >= outMax[1] || outMin[2] >= outMax[2])
+        return BH_ERROR;
+
+    return BH_OK;
+}
+
+
+int BH_Box3fContains(const float *aMin,
+                     const float *aMax,
+                     const float *point)
+{
+    if (point[0] < aMin[0] || point[1] < aMin[1] || point[2] < aMin[2])
+        return BH_ERROR;
+
+    if (point[0] > aMax[0] || point[1] > aMax[1] || point[2] > aMax[2])
+        return BH_ERROR;
+
+    return BH_OK;
+}
+
+
+int BH_Box3fEnclose(const float *points,
+                    size_t size,
+                    float *outMin,
+                    float *outMax)
+{
+    float tmp1[3], tmp2[3];
+    size_t i;
+
+    if (!size)
+        return BH_ERROR;
+
+    memcpy(tmp1, points, sizeof(tmp1));
+    memcpy(tmp2, points, sizeof(tmp2));
+
+    for (i = 1; i < size; i++)
+    {
+        BH_Vec3fMin(tmp1, points + i * 3, tmp1);
+        BH_Vec3fMax(tmp2, points + i * 3, tmp2);
+    }
+
+    memcpy(outMin, tmp1, sizeof(tmp1));
+    memcpy(outMax, tmp2, sizeof(tmp2));
+    return BH_OK;
+}