// Dick Hollenbeck's KiROUND R&D

// This provides better project control over rounding to int from double
// than wxRound() did.  This scheme provides better logging in Debug builds
// and it provides for compile time calculation of constants.


#include <stdio.h>
#include <assert.h>
#include <limits.h>

//-----<KiROUND KIT>------------------------------------------------------------

/**
 * KiROUND
 * rounds a floating point number to an int using
 * "round halfway cases away from zero".
 * In Debug build an assert fires if will not fit into an int.
 */

#if defined( DEBUG )

// DEBUG: a macro to capture line and file, then calls this inline

static inline int KiRound( double v, int line, const char* filename )
{
    v = v < 0 ? v - 0.5 : v + 0.5;
    if( v > INT_MAX + 0.5 )
    {
        printf( "%s: in file %s on line %d, val: %.16g too ' > 0 ' for int\n", __FUNCTION__, filename, line, v );
    }
    else if( v < INT_MIN - 0.5 )
    {
        printf( "%s: in file %s on line %d, val: %.16g too ' < 0 ' for int\n", __FUNCTION__, filename, line, v );
    }
    return int( v );
}

#define KiROUND( v )    KiRound( v, __LINE__, __FILE__ )

#else

// RELEASE: a macro so compile can pre-compute constants.

#define KiROUND( v )  int( (v) < 0 ? (v) - 0.5 : (v) + 0.5 )

#endif


//-----</KiROUND KIT>-----------------------------------------------------------

// Only a macro is compile time calculated, an inline function causes a static constructor
// in a situation like this.
// Therefore the Release build is best done with a MACRO not an inline function.
int Computed = KiROUND( 14.3 * 8 );


int main( int argc, char** argv )
{
    for( double d = double(INT_MAX)-1;  d < double(INT_MAX)+8;  d += 2.0 )
    {
        int i = KiROUND( d );

        printf( "t: %d  %.16g\n", i, d );
    }

    return 0;
}

gerbview/dcode.cpp

@@ -215,9 +215,9 @@ int GERBVIEW_FRAME::ReadDCodeDefinitionFile( const wxString& D_Code_FullFileName
             sscanf( line, "%d,%d,%d,%d,%d,%d,%d", &ii,
                     &dimH, &dimV, &drill, &dummy, &dummy, &type_outil );
 
-            dimH  = wxRound( dimH * dcode_scale );
-            dimV  = wxRound( dimV * dcode_scale );
-            drill = wxRound( drill * dcode_scale );
+            dimH  = KiROUND( dimH * dcode_scale );
+            dimV  = KiROUND( dimV * dcode_scale );
+            drill = KiROUND( drill * dcode_scale );
 
             if( ii < 1 )
                 ii = 1;
@@ -245,9 +245,9 @@ int GERBVIEW_FRAME::ReadDCodeDefinitionFile( const wxString& D_Code_FullFileName
                 }
             }
 
-            dimH  = wxRound( fdimH * dcode_scale * 1000 );
-            dimV  = wxRound( fdimV * dcode_scale * 1000 );
-            drill = wxRound( fdrill * dcode_scale * 1000 );
+            dimH  = KiROUND( fdimH * dcode_scale * 1000 );
+            dimV  = KiROUND( fdimV * dcode_scale * 1000 );
+            drill = KiROUND( fdrill * dcode_scale * 1000 );
 
             if( strchr( "CLROP", c_type_outil[0] ) )
             {
@@ -600,7 +600,7 @@ void D_CODE::ConvertShapeToPolygon()
 
         if( m_Rotation )                   // vertical oval, rotate polygon.
         {
-            int angle = wxRound( m_Rotation * 10 );
+            int angle = KiROUND( m_Rotation * 10 );
 
             for( unsigned jj = 0; jj < m_PolyCorners.size(); jj++ )
             {