psppire-axis: Use rint() instead of nearbyint(), for portability.

rint() and nearbyint() are identical except that nearbyint() will not
raise the inexact result exception, which we don't care about.  OpenBSD
and probably other OSes have rint() but not nearbyint().

Perhaps a better fix would be to add a nearbyint module to Gnulib.

diff --git a/src/ui/gui/sheet/psppire-axis.c b/src/ui/gui/sheet/psppire-axis.c
index e229c9489f265fc84f2323084d7f1d8e6d260010..9cc879dc124c789333b6b7ed721a3d2e556bb5a0 100644 (file)
--- a/src/ui/gui/sheet/psppire-axis.c
+++ b/src/ui/gui/sheet/psppire-axis.c
@@ -1,5 +1,5 @@
 /* PSPPIRE - a graphical user interface for PSPP.
-   Copyright (C) 2008, 2009  Free Software Foundation
+   Copyright (C) 2008, 2009, 2010  Free Software Foundation
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -172,7 +172,7 @@ psppire_axis_start_pixel (const PsppireAxis *a, gint unit)
   fraction = (unit - start) / (gdouble) tower_node_get_size (&an->unit_node);
 
   return  tower_node_get_level (&an->pixel_node) +
-    nearbyint (fraction * tower_node_get_size (&an->pixel_node));
+    rint (fraction * tower_node_get_size (&an->pixel_node));
 }
 
 gint
@@ -196,8 +196,8 @@ psppire_axis_unit_size (const PsppireAxis *axis, gint unit)
 
   an = tower_data (n, struct axis_node, unit_node);
 
-  return nearbyint (tower_node_get_size (&an->pixel_node)
-                    / (gdouble) tower_node_get_size (&an->unit_node));
+  return rint (tower_node_get_size (&an->pixel_node)
+               / (gdouble) tower_node_get_size (&an->unit_node));
 }
 
 
@@ -472,7 +472,7 @@ split (PsppireAxis *a, gint posn)
   tower_resize (&a->unit_tower, &existing_node->unit_node, posn - start);
 
   tower_resize (&a->pixel_tower, &existing_node->pixel_node,
-               nearbyintf (fraction * existing_pixel_size));
+               rintf (fraction * existing_pixel_size));
 
   tower_insert (&a->unit_tower,
                existing_unit_size - (posn - start),
@@ -481,7 +481,7 @@ split (PsppireAxis *a, gint posn)
 
 
   tower_insert (&a->pixel_tower,
-               nearbyintf (existing_pixel_size * (1 - fraction)),
+               rintf (existing_pixel_size * (1 - fraction)),
                &new_node->pixel_node,
                tower_next (&a->pixel_tower, &existing_node->pixel_node));
 }