MVM is pretty much the mathvm language https://code.google.com/archive/p/mathvm/.

Types: int, double, string Conditional statements: if, for, while Operators: +, -, *, /, %, ==, !=, <, <=, >, >= Builtins: print (variadic func) Expressions: var, literal, expr op expr, func(expr, …) Declarations: type var;, type|void func(type var, …) stmt Statements: func(expr, expr, …);, var = expr;, if (expr) stmt;, if (expr) stmt else stmt, for (var in expr..expr) stmt, while (expr) stmt, { stmt; stmt; … }, return expr; Literals: 0, 0.0, "abc"

Declaration must precede the usage.

Scoping: {} defines the scope. Normal shadowing rules apply. Function definitions inside a scope form a closure:

{
  int i;
  int f() {
    // i is visible here.
    // j is not.
    return i + 1;
  }
  int j;

  i = 0;
  print(f()); // prints 1
  i = 1;
  print(f()); // prints 2
}

Differences from mathvm:

• No function keyword
• Use "" instead of '' for strings
• Foreign functions are defined as foreign <fundecl> instead of <fundecl> native 'name'
• Has #link pragma to link to shared libraries. Used to bind foreign function.
• Functions must be declared before first usage.
• Number of vars is not limited by 65536.