abc/src/aig/miniaig/minilut.h
// creating nodes 
// (constant nodes are created when LUT manager is created)
creating nodes
(constant nodes are created when LUT manager is created)
creating nodes ( constant nodes are created when LUT manager is created )
static int Mini_LutCreatePi( Mini_Lut_t * p )
{
    Mini_LutPush( p, 0, NULL, NULL );
    return p->nSize - 1;
}
static int Mini_LutCreatePi ( Mini_Lut_t * p ) { Mini_LutPush ( p , 0 , NULL , NULL ) ; return p -> nSize - 1 ; }
creating nodes
(constant nodes are created when LUT manager is created)
creating nodes ( constant nodes are created when LUT manager is created )