neq.c File Reference

Implements the OP_NEQ opcode for inequality comparison in the VM. More...

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Functions
	if (a.type==b.type)
	free_value (a)
	free_value (b)

Variables
case	OP_NEQ
Value	a = pop_value(vm)
int	neq = 1
	else
	break

Detailed Description

Implements the OP_NEQ opcode for inequality comparison in the VM.

This file is part of the Fun programming language. https://fun-lang.xyz/

Copyright 2025 Johannes Findeisen you@h.nosp@m.anez.nosp@m..org Licensed under the terms of the Apache-2.0 license. https://opensource.org/license/apache-2-0

This file handles the OP_NEQ instruction, which checks if two values are not equal. The values are popped from the stack, and the result (1 or 0) is pushed back.

Behavior:

• Pops two values from the stack.
• Checks if the values are not equal.
• Pushes 1 (true) or 0 (false) onto the stack.

Error Handling:

• Exits with an error if the operands are of incompatible types.

Example: // Bytecode: OP_NEQ // Stack before: [42, 10] // Stack after: [1]

Definition in file neq.c.

Function Documentation

free_value() [1/2]

free_value

(

a

)

free_value() [2/2]

free_value

(

b

)

if()

if

(

a.

type = = b.type

)

Definition at line 35 of file neq.c.

Variable Documentation

a

Value a = pop_value(vm)

Definition at line 33 of file neq.c.

break

break

Definition at line 69 of file neq.c.

else

else

Initial value:

{

if ((a.type == VAL_BOOL && b.type == VAL_INT) || (a.type == VAL_INT && b.type == VAL_BOOL)) {
int ai = (a.type == VAL_BOOL) ? (a.i != 0) : (a.i != 0);
int bi = (b.type == VAL_BOOL) ? (b.i != 0) : (b.i != 0);
neq = (ai != bi);
} else {
neq = 1;
}
}
push_value(vm, make_bool(neq))

Definition at line 56 of file neq.c.

neq

int neq = 1

Definition at line 34 of file neq.c.

OP_NEQ

case OP_NEQ

Definition at line 31 of file neq.c.