[LIBJPEG]

[reactos.git] / reactos / dll / 3rdparty / libjpeg / jfdctflt.c

diff --git a/reactos/dll/3rdparty/libjpeg/jfdctflt.c b/reactos/dll/3rdparty/libjpeg/jfdctflt.c
index 74d0d86..0ebc186 100644 (file)
--- a/reactos/dll/3rdparty/libjpeg/jfdctflt.c
+++ b/reactos/dll/3rdparty/libjpeg/jfdctflt.c
@@ -2,7 +2,7 @@
  * jfdctflt.c
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * Modified 2003-2009 by Guido Vollbeding.
+ * Modified 2003-2015 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -54,6 +54,8 @@
 
 /*
  * Perform the forward DCT on one block of samples.
+ *
+ * cK represents cos(K*pi/16).
  */
 
 GLOBAL(void)
@@ -89,7 +91,7 @@ jpeg_fdct_float (FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col
     tmp11 = tmp1 + tmp2;
     tmp12 = tmp1 - tmp2;
 
-    /* Apply unsigned->signed conversion */
+    /* Apply unsigned->signed conversion. */
     dataptr[0] = tmp10 + tmp11 - 8 * CENTERJSAMPLE; /* phase 3 */
     dataptr[4] = tmp10 - tmp11;