X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/615a9936a47445caccdabbf68263af3432f1f109..2d19ad25782b1b370cd26d0f17d45856d201fc70:/src/tiff/tif_luv.c

diff --git a/src/tiff/tif_luv.c b/src/tiff/tif_luv.c
index 413c6c1e2f..5adaa54e0f 100644
--- a/src/tiff/tif_luv.c
+++ b/src/tiff/tif_luv.c
@@ -608,9 +608,12 @@ LogLuvEncodeTile(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
 #else
 #define LOGOF2		0.69314718055994530942
 #endif
+#ifndef log2
 #define log2(x)		((1./LOGOF2)*log(x))
+#endif
+#ifndef exp2
 #define exp2(x)		exp(LOGOF2*(x))
-
+#endif
 #define UVSCALE		410.
 
 static double