Revision: 56644
http://sourceforge.net/p/brlcad/code/56644
Author: starseeker
Date: 2013-08-06 20:38:33 +0000 (Tue, 06 Aug 2013)
Log Message:
-----------
Clear the warnings about floating point comparisons from gdiam.hpp
Modified Paths:
--------------
brlcad/trunk/src/other/libgdiam/gdiam.hpp
Modified: brlcad/trunk/src/other/libgdiam/gdiam.hpp
===================================================================
--- brlcad/trunk/src/other/libgdiam/gdiam.hpp 2013-08-06 20:09:37 UTC (rev
56643)
+++ brlcad/trunk/src/other/libgdiam/gdiam.hpp 2013-08-06 20:38:33 UTC (rev
56644)
@@ -43,6 +43,10 @@
typedef gdiam_real * gdiam_point;
typedef const gdiam_real * gdiam_point_cnt;
+#define SMALL_DOUBLE 1.0e-37
+#define GDIAM_NEAR_ZERO(val) (((val) > - SMALL_DOUBLE) && ((val) <
SMALL_DOUBLE))
+
+
#ifndef __MINMAX_DEFINED
#define __MINMAX_DEFINED
@@ -70,7 +74,7 @@
inline void pnt_normalize( gdiam_point pnt )
{
gdiam_real len = pnt_length( pnt );
- if ( len == 0.0 )
+ if ( GDIAM_NEAR_ZERO(len) )
return;
pnt[ 0 ] /= len;
@@ -173,9 +177,9 @@
const gdiam_point q )
{
// Assuming here the GDIAM_DIM == 3 !!!!
- return ( ( p[ 0 ] == q[ 0 ] )
- && ( p[ 1 ] == q[ 1 ] )
- && ( p[ 2 ] == q[ 2 ] ) );
+ return ( GDIAM_NEAR_ZERO(p[0] - q[0])
+ && GDIAM_NEAR_ZERO(p[1] - q[1])
+ && GDIAM_NEAR_ZERO(p[2] - q[2]) ) ;
}
inline void pnt_scale_and_add( gdiam_point dest,
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