diff --git a/src/linalg/mat.cu b/src/linalg/mat.cu
index c42a8b3..c206cb1 100644
--- a/src/linalg/mat.cu
+++ b/src/linalg/mat.cu
@@ -53,10 +53,4 @@ __device__ float clamp(float value, float min, float max) {
 // Normalize a float to the range [0, 1]
 __device__ float normalize(float value, float min, float max) {
   return (value - min) / (max - min);
-}
-
-// Interpolate between two values
-template <typename T>
-__device__ T interpolate(T start, T end, float t) {
-  return start + t * (end - start);
-}
+}
\ No newline at end of file
diff --git a/src/linalg/mat.h b/src/linalg/mat.h
index 559b8c5..4d2a1d5 100644
--- a/src/linalg/mat.h
+++ b/src/linalg/mat.h
@@ -10,8 +10,12 @@ __device__ unsigned int packUnorm4x8(float r, float g, float b, float a);
 __device__ float clamp(float value, float min, float max);
 __device__ float normalize(float value, float min, float max);
 
+// Interpolate between two values
 template <typename T>
-__device__ float interpolate(T start, T end, float t);
+__device__ T interpolate(T start, T end, float t) {
+  return start + t * (end - start);
+}
+
 
 
 #endif // MAT_H