3 files changed, 41 insertions, 6 deletions
diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp
index 702ddce95..aa3bb843d 100644
--- a/src/util/numeric.cpp
+++ b/src/util/numeric.cpp
@@ -46,11 +46,22 @@ void myrand_bytes(void *out, size_t len)
 	g_pcgrand.bytes(out, len);
 }
 
+float myrand_float()
+{
+	u32 uv = g_pcgrand.next();
+	return (float)uv / (float)U32_MAX;
+}
+
 int myrand_range(int min, int max)
 {
 	return g_pcgrand.range(min, max);
 }
 
+float myrand_range(float min, float max)
+{
+	return (max-min) * myrand_float() + min;
+}
+
 
 /*
 	64-bit unaligned version of MurmurHash
diff --git a/src/util/numeric.h b/src/util/numeric.h
index 32a6f4312..265046a63 100644
--- a/src/util/numeric.h
+++ b/src/util/numeric.h
@@ -223,6 +223,8 @@ u32 myrand();
 void mysrand(unsigned int seed);
 void myrand_bytes(void *out, size_t len);
 int myrand_range(int min, int max);
+float myrand_range(float min, float max);
+float myrand_float();
 
 /*
 	Miscellaneous functions
@@ -446,3 +448,24 @@ inline irr::video::SColor multiplyColorValue(const irr::video::SColor &color, fl
 			core::clamp<u32>(color.getGreen() * mod, 0, 255),
 			core::clamp<u32>(color.getBlue() * mod, 0, 255));
 }
+
+template <typename T> inline T numericAbsolute(T v) { return v < 0 ? T(-v) : v;                }
+template <typename T> inline T numericSign(T v)     { return T(v < 0 ? -1 : (v == 0 ? 0 : 1)); }
+
+inline v3f vecAbsolute(v3f v)
+{
+	return v3f(
+		numericAbsolute(v.X),
+		numericAbsolute(v.Y),
+		numericAbsolute(v.Z)
+	);
+}
+
+inline v3f vecSign(v3f v)
+{
+	return v3f(
+		numericSign(v.X),
+		numericSign(v.Y),
+		numericSign(v.Z)
+	);
+}
diff --git a/src/util/pointer.h b/src/util/pointer.h
index 245ac85bf..b659cea0e 100644
--- a/src/util/pointer.h
+++ b/src/util/pointer.h
@@ -45,7 +45,7 @@ public:
 	Buffer()
 	{
 		m_size = 0;
-		data = NULL;
+		data = nullptr;
 	}
 	Buffer(unsigned int size)
 	{
@@ -53,7 +53,7 @@ public:
 		if(size != 0)
 			data = new T[size];
 		else
-			data = NULL;
+			data = nullptr;
 	}
 
 	// Disable class copy
@@ -82,7 +82,7 @@ public:
 			memcpy(data, t, size);
 		}
 		else
-			data = NULL;
+			data = nullptr;
 	}
 
 	~Buffer()
@@ -166,7 +166,7 @@ public:
 		if(m_size != 0)
 			data = new T[m_size];
 		else
-			data = NULL;
+			data = nullptr;
 		refcount = new unsigned int;
 		memset(data,0,sizeof(T)*m_size);
 		(*refcount) = 1;
@@ -201,7 +201,7 @@ public:
 			memcpy(data, t, m_size);
 		}
 		else
-			data = NULL;
+			data = nullptr;
 		refcount = new unsigned int;
 		(*refcount) = 1;
 	}
@@ -216,7 +216,7 @@ public:
 				memcpy(data, *buffer, buffer.getSize());
 		}
 		else
-			data = NULL;
+			data = nullptr;
 		refcount = new unsigned int;
 		(*refcount) = 1;
 	}
@@ -256,3 +256,4 @@ private:
 	unsigned int m_size;
 	unsigned int *refcount;
 };
+