       10 // ROUND test program
       20 //
       30 SYS assert, ROUND(0.4)=0
       40 SYS assert, ROUND(0.4999999999)=0
       50 SYS assert, ROUND(0.5)=1
       60 SYS assert, ROUND(0.6)=1
       70 SYS assert, ROUND(-1.4)=-1
       80 SYS assert, ROUND(-1.4999999)=-1
       90 SYS assert, ROUND(-1.5)=-2
      100 PRINT "Ok"
