11 #if defined __cplusplus 
   23     ptwXYOverflowPoint *o, *overflowHeader = &(ptwXY->overflowHeader);
 
   25     if( ptwXY->status != nfu_Okay ) 
return( ptwXY->status );
 
   27     for( i = 0, p = ptwXY->points; i < nonOverflowLength; i++, p++ ) p->y = std::fabs( p->y );
 
   28     for( o = overflowHeader->next; o != overflowHeader; o = o->next ) o->point.y = std::fabs( o->point.y );
 
   29     return( ptwXY->status );
 
   38     ptwXYOverflowPoint *o, *overflowHeader = &(ptwXY->overflowHeader);
 
   40     if( ptwXY->status != nfu_Okay ) 
return( ptwXY->status );
 
   42     for( i = 0, p = ptwXY->points; i < nonOverflowLength; i++, p++ ) p->y = -p->y;
 
   43     for( o = overflowHeader->next; o != overflowHeader; o = o->next ) o->point.y = -o->point.y;
 
   44     return( ptwXY->status );
 
   47 #if defined __cplusplus 
nfu_status ptwXY_neg(ptwXYPoints *ptwXY)
int64_t ptwXY_getNonOverflowLength(ptwXYPoints const *ptwXY)
nfu_status ptwXY_abs(ptwXYPoints *ptwXY)