extern int x1f4_long_program (void *program, int *note, void *back, int (*call)(void *), void *output);
x1f4_long_program function executes the
After each successfully non
‘return’ introduced expression evaluation it tests the
note and upon non zero find it calls the
call routine, passing
back as its only argument. If the routine evaluates zero, the
x1f4_long_program function resets the
int stored at
and continues with the program execution, otherwise it immediately returns non
See Imperative Program Execution.
A non zero return of the
call routine may be examined against the
defined error classes and recovered later, depending on its value and whether
error trapping mechanisms have been installed.
See Error Classes.
See Limiting The Scope Of Errors.
If successful, the function stores the evaluation result of the last program
statement at the address indicated by
output and returns
zero is returned for failure. The statement would be a ‘return’
introduced one. The completion syntax when parsing the program would have
indicated that the last statement of the program is ‘return’ introduced.
See Imperative Language Syntax.
See Program Completions.
See struct x1f4_function_type.
See Prefix Unary Operators.
See Infix Binary Operators.
See struct x1f4_operator_type.