Topic       : TOS - das Betriebssystem
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Version     : tos.hyp (5. März 2013)
Subject     : Programmieren/Atari
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View Ref-File7.9.2  Bindings für v_color2nearest                                TOS

 C:         int32_t v_color2nearest( int16_t handle, int32_t 
            color_space, COLOR_ENTRY *color, COLOR_ENTRY 
            *nearest_color );

 Umsetzung:

            int32_t v_color2nearest( int16_t handle, int32_t color_space,
                                     COLOR_ENTRY *color,
                                     COLOR_ENTRY *nearest_color )
            {
               intin[0..1] = color_space;
               intin[2..5] = color;
 
               contrl[0] = 204;
               contrl[1] = 0;
               contrl[3] = 6;
               contrl[5] = 2;
               contrl[6] = handle;
 
               vdi ();
 
               nearest_color = intout[2..5];
 
               return ( (int32_t) intout[0] );
            }

 GEM-Arrays:

             Adresse    Feldelement   Belegung 
             contrl     contrl[0]     204   # Opcode der Funktion 
             contrl+2   contrl[1]     0     # Einträge in ptsin 
             contrl+4   contrl[2]     0     # Einträge in ptsout 
             contrl+6   contrl[3]     6     # Einträge in intin 
             contrl+8   contrl[4]     6     # Einträge in intout 
             contrl+10  contrl[5]     2     # Sub-Opcode 
             contrl+12  contrl[6]     handle 
             intin      intin[0..1]   color_space 
             intin+4    intin[2..5]   color 
             intout     intout[0..1]  Rückgabewert 
             intout+4   intout[2..5]  nearest_color