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Test sequences for ngspice control structures
*vectors are used (except foreach)
*start in interactive mode
.control
* test for while, repeat, if, break
let loop = 0
while loop < 4
let index = 0
repeat
let index = index + 1
if index > 4
break
end
end
echo index "$&index" loop "$&loop"
let loop = loop + 1
end
* test sequence for while, dowhile
let loop = 0
echo
echo enter loop with "$&loop"
dowhile loop < 3
echo within dowhile loop "$&loop"
let loop = loop + 1
end
echo after dowhile loop "$&loop"
echo
let loop = 0
while loop < 3
echo within while loop "$&loop"
let loop = loop + 1
end
echo after while loop "$&loop"
let loop = 3
echo
echo enter loop with "$&loop"
dowhile loop < 3
echo within dowhile loop "$&loop" $ output expected
let loop = loop + 1
end
echo after dowhile loop "$&loop"
echo
let loop = 3
while loop < 3
echo within while loop "$&loop" $ no output expected
let loop = loop + 1
end
echo after while loop "$&loop"
* test sequence for foreach
echo
foreach outvar 0 0.5 1 1.5
echo parameters: $outvar $ foreach parameters are variables, not vectors!
end
* test for if ... else ... end
echo
let loop = 0
let index = 1
dowhile loop < 10
let index = index * 2
if index < 128
echo "$&index" lt 128
else
echo "$&index" ge 128
end
let loop = loop + 1
end
* simple test for label, goto
echo
let loop = 0
label starthere
echo start "$&loop"
let loop = loop + 1
if loop < 3
goto starthere
end
echo end "$&loop"
* test for label, nested goto
echo
let loop = 0
label starthere1
echo start nested "$&loop"
let loop = loop + 1
if loop < 3
if loop < 3
goto starthere1
end
end
echo end "$&loop"
* test for label, goto
echo
let index = 0
label starthere2
let loop = 0
echo We are at start with index "$&index" and loop "$&loop"
if index < 6
label inhere
let index = index + 1
if loop < 3
let loop = loop + 1
if index > 1
echo jump2
goto starthere2
end
end
echo jump
goto inhere
end
echo We are at end with index "$&index" and loop "$&loop"
* test goto in while loop
echo
let loop = 0
if 1 $ outer loop to allow nested forward label 'endlabel'
while loop < 10
if loop > 5
echo jump
goto endlabel
end
let loop = loop + 1
end
echo before $ never reached
label endlabel
echo after "$&loop"
end
*test for using variables
* simple test for label, goto
echo
set loop = 0
label starthe
echo start $loop
let loop = $loop + 1 $ expression needs vector at lhs
set loop = "$&loop" $ convert vector contents to variable
if $loop < 3
goto starthe
end
echo end $loop
.endc
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