test numeric expr

ok true true ok true ok 2+2=4 ONE+2=3 ONE + TWO=3 THREE=3 (ONE+TWO)==THREE=1 ONE+TWO == THREE=1 (ONE+TWO == THREE) and (THREE && TWO) and sin(ONE)=1 sin(ONE)=0.841471 111.111 + 222.333555=333.444555 7%3=1 (70*5)%33-20=0 7 && 3=1 strings are true: 'aaa' && 'bbb'=1 'aaa' || 0=1 minus is handled properly: MINUSTEN+8=-2