make the jpegquality docs clearer

[imager.git] / PNG / impng.h

diff --git a/PNG/impng.h b/PNG/impng.h
index af8225a2fa7e9ad83846a02dbee960105aa11617..f27a825d77c94d53a0cb5ea0bb78ba846a582685 100644 (file)
--- a/PNG/impng.h
+++ b/PNG/impng.h
@@ -10,4 +10,7 @@ i_img    *i_readpng_wiol(io_glue *ig, int flags);
 undef_int i_writepng_wiol(i_img *im, io_glue *ig);
 unsigned i_png_lib_version(void);
 
+extern const char * const *
+i_png_features(void);
+
 #endif