66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/**
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2025 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*/
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/**
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* @file div.c
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* @brief Implements the OP_DIV opcode for integer division in the VM.
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*
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* This file handles the OP_DIV instruction, which performs integer division
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* on two integer values popped from the stack and pushes the result back onto the stack.
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*
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* Behavior:
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* - Pops two integer values from the stack.
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* - Performs integer division (`a / b`).
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* - Pushes the result back onto the stack.
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*
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* Error Handling:
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* - Exits with an error if the operands are not integers.
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* - Exits with an error if division by zero is attempted.
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*
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* Example:
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* // Bytecode: OP_DIV
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* // Stack before: [10, 2]
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* // Stack after: [5]
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*
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* @author Johannes Findeisen
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* @date 2025-10-16
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*/
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case OP_DIV: {
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Value b = pop_value(vm);
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Value a = pop_value(vm);
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if ((a.type == VAL_INT || a.type == VAL_FLOAT) && (b.type == VAL_INT || b.type == VAL_FLOAT)) {
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if (a.type == VAL_FLOAT || b.type == VAL_FLOAT) {
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double da = (a.type == VAL_FLOAT) ? a.d : (double)a.i;
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double db = (b.type == VAL_FLOAT) ? b.d : (double)b.i;
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if (db == 0.0) {
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vm_raise_error(vm, "division by zero");
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break;
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}
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Value res = make_float(da / db);
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free_value(a);
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free_value(b);
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push_value(vm, res);
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} else {
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if (b.i == 0) {
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vm_raise_error(vm, "division by zero");
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break;
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}
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Value res = make_int(a.i / b.i);
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free_value(a);
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free_value(b);
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push_value(vm, res);
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}
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} else {
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fprintf(stderr, "Runtime type error: DIV expects numbers, got %s and %s\n",
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value_type_name(a.type), value_type_name(b.type));
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exit(1);
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}
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break;
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}
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