Fun 0.41.5
The programming language that makes you have fun!
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abs.c
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1/*
2 * This file is part of the Fun programming language.
3 * https://fun-lang.xyz/
4 *
5 * Copyright 2025 Johannes Findeisen <you@hanez.org>
6 * Licensed under the terms of the Apache-2.0 license.
7 * https://opensource.org/license/apache-2-0
8 */
9
10/**
11 * @file abs.c
12 * @brief Implements the OP_ABS opcode for absolute value in the VM.
13 *
14 * This file handles the OP_ABS instruction, which computes the absolute value
15 * of an integer.
16 *
17 * Behavior:
18 * - Pops value from stack
19 * - Pushes |value|
20 *
21 * Error Handling:
22 * - Exits if not integer
23 */
24
25case OP_ABS: {
26 Value x = pop_value(vm);
27 if (x.type != VAL_INT) {
28 fprintf(stderr, "ABS expects int\n");
29 exit(1);
30 }
31 int64_t v = x.i;
32 if (v < 0) v = -v;
35 break;
36}
free_value(x)
push_value(vm, make_int(v))
@ OP_ABS
Definition bytecode.h:124
Value v
Definition cast.c:22
Value x
Definition clamp.c:29
Tagged union representing a Fun value.
Definition value.h:68
Value make_int(int64_t v)
Construct a Value representing a 64-bit integer.
Definition value.c:51
@ VAL_INT
Definition value.h:51
static Value pop_value(VM *vm)
Pop a Value from the VM operand stack.
Definition vm.c:580
#define fprintf
Definition vm.c:200
#define exit(code)
Definition vm.c:230