diff --git a/src/debug/record.cpp b/src/debug/record.cpp
index 99a0e27f..53e440b2 100644
--- a/src/debug/record.cpp
+++ b/src/debug/record.cpp
@@ -35,11 +35,11 @@ class DebugRecordData
     friend class DebugRecord;
 
 private:
-    char const *path;
-    ivec2 size;
-    int fps;
+    String m_path;
+    ivec2 m_size;
+    int m_fps;
 #if defined USE_PIPI
-    pipi_sequence_t *sequence;
+    pipi_sequence_t *m_sequence;
 #endif
 };
 
@@ -47,16 +47,16 @@ private:
  * Public DebugRecord class
  */
 
-DebugRecord::DebugRecord(char const *path, float fps)
-  : data(new DebugRecordData())
+DebugRecord::DebugRecord(String const &path, float fps)
+  : m_data(new DebugRecordData())
 {
     Ticker::StartRecording();
 
-    data->path = strdup(path);
-    data->size = ivec2::zero;
-    data->fps = (int)(fps + 0.5f);
+    m_data->m_path = path;
+    m_data->m_size = ivec2::zero;
+    m_data->m_fps = (int)(fps + 0.5f);
 #if defined USE_PIPI
-    data->sequence = nullptr;
+    m_data->m_sequence = nullptr;
 #endif
 
     m_drawgroup = DRAWGROUP_CAPTURE;
@@ -73,26 +73,27 @@ void DebugRecord::TickDraw(float seconds)
 
     ivec2 size = Video::GetSize();
 
-    if (data->size != size)
+    if (m_data->m_size != size)
     {
-        data->size = size;
+        m_data->m_size = size;
 
 #if defined USE_PIPI
-        if (data->sequence)
-            pipi_close_sequence(data->sequence);
+        if (m_data->m_sequence)
+            pipi_close_sequence(m_data->m_sequence);
 
-        data->sequence = pipi_open_sequence(data->path, size.x, size.y,
-                                            1 /* RGB */, data->fps,
-                                            1, 1, 60 * 1024 * 1024);
+        m_data->m_sequence = pipi_open_sequence(m_data->m_path, size.x, size.y,
+                                                1 /* RGB */, m_data->m_fps,
+                                                1, 1, 60 * 1024 * 1024);
 #endif
     }
 
 #if defined USE_PIPI
-    if (data->sequence)
+    if (m_data->m_sequence)
     {
         uint32_t *buffer = new uint32_t[size.x * size.y];
         Video::Capture(buffer);
-        pipi_feed_sequence(data->sequence, (uint8_t *)buffer, size.x, size.y);
+        pipi_feed_sequence(m_data->m_sequence, (uint8_t *)buffer,
+                           size.x, size.y);
         delete[] buffer;
     }
 #endif
@@ -102,7 +103,7 @@ DebugRecord::~DebugRecord()
 {
     Ticker::StopRecording();
 
-    delete data;
+    delete m_data;
 }
 
 } /* namespace lol */
diff --git a/src/debug/record.h b/src/debug/record.h
index 89f5df0c..840a51ab 100644
--- a/src/debug/record.h
+++ b/src/debug/record.h
@@ -26,7 +26,7 @@ class DebugRecordData;
 class DebugRecord : public Entity
 {
 public:
-    DebugRecord(char const *path, float fps);
+    DebugRecord(String const &path, float fps);
     virtual ~DebugRecord();
 
 protected:
@@ -34,7 +34,7 @@ protected:
     virtual void TickDraw(float seconds);
 
 private:
-    DebugRecordData *data;
+    DebugRecordData *m_data;
 };
 
 } /* namespace lol */
diff --git a/src/image/color/cie1931.cpp b/src/image/color/cie1931.cpp
index 93ed4e63..345a077f 100644
--- a/src/image/color/cie1931.cpp
+++ b/src/image/color/cie1931.cpp
@@ -584,10 +584,10 @@ vec3 Color::WavelengthToCIExyY(float nm)
     if (i < 0 || i > 830 - 360)
         return vec3::zero;
 
-    float t = nm - i, s = 1.0 - t;
-    float x = s * cie_1931_xyz[i * 3 + 0] + t * cie_1931_xyz[i * 3 + 3];
-    float y = s * cie_1931_xyz[i * 3 + 1] + t * cie_1931_xyz[i * 3 + 4];
-    float z = s * cie_1931_xyz[i * 3 + 2] + t * cie_1931_xyz[i * 3 + 5];
+    float t = nm - i;
+    float x = lol::lerp(cie_1931_xyz[i * 3 + 0], cie_1931_xyz[i * 3 + 3], t);
+    float y = lol::lerp(cie_1931_xyz[i * 3 + 1], cie_1931_xyz[i * 3 + 4], t);
+    float z = lol::lerp(cie_1931_xyz[i * 3 + 2], cie_1931_xyz[i * 3 + 5], t);
     float normalize = 1.f / (x + y + z);
 
     return vec3(x * normalize, y * normalize, 100.0f);
diff --git a/src/lol/math/functions.h b/src/lol/math/functions.h
index f1ef47fc..a87c5657 100644
--- a/src/lol/math/functions.h
+++ b/src/lol/math/functions.h
@@ -133,21 +133,36 @@ static inline uint32_t radians(uint32_t x)  { return (uint32_t)radians((double)x
 static inline int64_t radians(int64_t x)    { return (int64_t) radians((ldouble)x); }
 static inline uint64_t radians(uint64_t x)  { return (uint64_t)radians((ldouble)x); }
 
-static inline float lerp(float const &a, float const &b, float const &x)
+static inline float mix(float const &a, float const &b, float const &x)
 {
     return a + (b - a) * x;
 }
 
-static inline double lerp(double const &a, double const &b, double const &x)
+static inline double mix(double const &a, double const &b, double const &x)
 {
     return a + (b - a) * x;
 }
 
-static inline ldouble lerp(ldouble const &a, ldouble const &b, ldouble const &x)
+static inline ldouble mix(ldouble const &a, ldouble const &b, ldouble const &x)
 {
     return a + (b - a) * x;
 }
 
+/* Inherited from HLSL */
+static inline float lerp(float const &a, float const &b, float const &x)
+{
+    return mix(a, b, x);
+}
+
+static inline double lerp(double const &a, double const &b, double const &x)
+{
+    return mix(a, b, x);
+}
+
+static inline ldouble lerp(ldouble const &a, ldouble const &b, ldouble const &x)
+{
+    return mix(a, b, x);
+}
 
 /* These accelerated functions will be merged into the above, one day */
 double lol_sin(double);
diff --git a/src/math/real.cpp b/src/math/real.cpp
index b300b698..52753a70 100644
--- a/src/math/real.cpp
+++ b/src/math/real.cpp
@@ -783,7 +783,8 @@ template<> real gamma(real const &x)
      * precision values in order to attain the desired accuracy. It might
      * also be useful to sort the ck values by decreasing absolute value
      * and do the addition in this order. */
-    int a = ceilf(logf(2) / logf(2 * F_PI) * real::BIGITS * real::BIGIT_BITS);
+    int a = (int)ceilf(logf(2) / logf(2 * F_PI)
+                          * real::BIGITS * real::BIGIT_BITS);
 
     real ret = sqrt(real::R_PI() * 2);
     real fact_k_1 = real::R_1();