Testing update with check.sh

tests/sprint2/test/sp2_library.alpha

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+(* At compiler start-up your program should create symbol table entries for the four primitive types:
+        Boolean (1 byte)
+        character (1 byte)
+        integer (4 bytes)
+        address (8 bytes)
+You should #include this file at the start of your alpha file.
+Some useful types are defined below.
+*)
+type string: 1 -> character
+type BooleanXBoolean: [Boolean: x, y]
+type characterXcharacter: [character: x, y]
+type integerXinteger: [integer: x, y]
+
+type Boolean2Boolean: Boolean -> Boolean
+type integer2integer: integer -> integer
+type character2integer: character -> integer
+type Boolean2integer: Boolean -> integer
+type string2integer: string -> integer
+type integerXinteger2integer: integerXinteger -> integer
+type integerXinteger2Boolean: integerXinteger -> Boolean
+type characterXcharacter2Boolean: characterXcharacter -> Boolean
+type BooleanXBoolean2Boolean: BooleanXBoolean -> Boolean
+type integer2address: integer -> address
+type address2integer: address -> integer
+external function printInteger: integer2integer
+external function printCharacter: character2integer
+external function printBoolean: Boolean2integer
+external function reserve: integer2address
+external function release: address2integer
+function entry: string2integer