| Group: | Flow Control |
| See also: | case break default endsw |
| Function: | switch | |
| Description: | switch allows the selection of one or more alternatives of many. Each alternative is introduced by a case statement. Similar to if-endif it controls, whether the following block is processed or not. The keyword break serves as end marker of case and leaves the switch block at the position of endsw. When break is omitted, the next consecutive case is processed. If the program's counter comes to default, the following block is executed in any case. |
| Usage: | switch case (cond) break default endsw | |
proc(y) = sign(x)
switch
case(x<0) y = -1 break
case(x>0) y = 1 break
default y = 0 break ; this break has no effect
endsw
endp
sign(-eh)
Contents of y [1,] -1