45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/**
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* This file is part of the Fun programming language.
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* https://hanez.org/project/fun/
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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 clamp.c
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* @brief Implements the OP_CLAMP opcode for value clamping in the VM.
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*
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* This file handles the OP_CLAMP instruction, which clamps a value between
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* a minimum and maximum.
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*
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* Behavior:
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* - Pops x, lo, hi from stack
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* - Pushes x clamped to [lo,hi]
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*
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* Error Handling:
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* - Exits if arguments wrong types
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* - Handles hi < lo case
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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_CLAMP: {
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Value hi = pop_value(vm);
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Value lo = pop_value(vm);
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Value x = pop_value(vm);
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if (x.type != VAL_INT || lo.type != VAL_INT || hi.type != VAL_INT) {
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fprintf(stderr, "CLAMP expects ints\n");
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exit(1);
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}
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int64_t v = x.i;
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if (v < lo.i) v = lo.i;
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if (v > hi.i) v = hi.i;
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push_value(vm, make_int(v));
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free_value(x);
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free_value(lo);
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free_value(hi);
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break;
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}
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