[gimp/gimp-2-8] Bug 788461 - Selection with a Fixed size is created with an ...

[N/A <ell src gnome org>]

commit eadd42b9eeec9e83032b01898adf4aee72bfa93b
Author: Ell <ell_se yahoo com>
Date:   Thu Oct 5 16:05:25 2017 -0400

    Bug 788461 - Selection with a Fixed size is created with an ...
    
    ... off-by one size in special cases
    
    SIGNED_ROUND(), which is used by GimpToolRectangle, among other
    things, used to round negative values which lie exactly between
    two integers, i.e., -foo.5, down.  This could lead to the rectangle
    being one pixel bigger than expected, in either dimension, when one
    of its edges had a negative coordinate, and the opposite edge had a
    positive coordinate.
    
    Fix SIGNED_ROUND() to always round such values up, regardless of
    sign.
    
    (cherry picked from commit e8b37a7a2543cf8fabd9780931ecf9dd7a461975)

 libgimpmath/gimpmath.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgimpmath/gimpmath.h b/libgimpmath/gimpmath.h
index d3abb33..5925004 100644
--- a/libgimpmath/gimpmath.h
+++ b/libgimpmath/gimpmath.h
@@ -84,7 +84,7 @@ G_BEGIN_DECLS
  *
  * This macro rounds its argument @x to the nearest integer.
  **/
-#define SIGNED_ROUND(x) ((int) ((((x) < 0) ? (x) - 0.5 : (x) + 0.5)))
+#define SIGNED_ROUND(x) ((int) RINT (x))
 
 /**
  * SQR: