1 files changed, 2 insertions, 0 deletions
diff --git a/libtiff/tiffiop.h b/libtiff/tiffiop.h
index e3af461d..7bd50514 100644
--- a/libtiff/tiffiop.h
+++ b/libtiff/tiffiop.h
@@ -429,6 +429,8 @@ extern int TIFFInitZSTD(TIFF*, int);
 extern int TIFFInitWebP(TIFF*, int);
 #endif
 extern const TIFFCodec _TIFFBuiltinCODECS[];
+extern void TIFFCIELab16ToXYZ(TIFFCIELabToRGB *, uint32_t l, int32_t a, int32_t b,
+                              float *, float *, float *);
 
 #if defined(__cplusplus)
 }