fmax.c

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/*
 * This file is part of the Fun programming language.
 * https://fun-lang.xyz/
 *
 * Copyright 2026 Johannes Findeisen <you@hanez.org>
 * Licensed under the terms of the Apache-2.0 license.
 * https://opensource.org/license/apache-2-0
 */


#include <math.h>

case OP_FMAX: {
 Value b = pop_value(vm);
 Value a = pop_value(vm);
 if (!((a.type == VAL_INT || a.type == VAL_FLOAT) && (b.type == VAL_INT || b.type == VAL_FLOAT))) {
 fprintf(stderr, "Runtime type error: FMAX expects numbers, got %s and %s\n",
 value_type_name(a.type), value_type_name(b.type));
 exit(1);
 }
 double da = (a.type == VAL_FLOAT) ? a.d : (double)a.i;
 double db = (b.type == VAL_FLOAT) ? b.d : (double)b.i;
 double r = fmax(da, db);
 Value out;
 if (!isnan(r) && !isinf(r) && r >= (double)INT64_MIN && r <= (double)INT64_MAX) {
 int64_t ii = (int64_t)r;
 if ((double)ii == r)
 out = make_int(ii);
 else
 out = make_float(r);
 } else {
 out = make_float(r);
 }
 free_value(a);
 free_value(b);
 push_value(vm, out);
 break;
}