1 files changed, 1 insertions, 0 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index 97066737..e5c44a96 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -69,6 +69,7 @@ extern inline ALuint64 maxu64(ALuint64 a, ALuint64 b);
 extern inline ALuint64 clampu64(ALuint64 val, ALuint64 min, ALuint64 max);
 
 extern inline ALfloat lerp(ALfloat val1, ALfloat val2, ALfloat mu);
+extern inline ALfloat cubic(ALfloat val1, ALfloat val2, ALfloat val3, ALfloat val4, ALfloat mu);
 
 extern inline void aluVectorSet(aluVector *restrict vector, ALfloat x, ALfloat y, ALfloat z, ALfloat w);