// S : tags   interval min  $TAGS
// S : expect --result valid
// S : cc     -o test.bc  $CC_OPT $file
// S : verify --lamp interval -o nofail:malloc $V_OPT test.bc

#include <sys/lamp.h>
#include <sys/lift.h>
#include <cassert>

int main()
{
    // a:      4------8
    // b:    3-4
    auto a = __lamp::lift( 4, 8 ); // a = [ 4, 8 ]
    auto b = __lamp::lift( 3, 4 ); // b = [ 3, 4 ]

    auto c = a - b; // c = [ 0, 5 ]
    if ( c > 1 ) // c = [ 2, 5 ]
    {
        assert( a == __lamp::lift( 5, 8 ) );
        assert( b == __lamp::lift( 3, 4 ) );
    }
    else // c = [ 0, 1 ]
    {
        assert( a == __lamp::lift( 4, 5 ) );
        assert( b == __lamp::lift( 3, 4 ) );
    }
}