qmk-firmware/keyboards/lily58/keymaps/druotoni/fast_random.c

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// Copyright 2021 Nicolas Druoton (druotoni)
// SPDX-License-Identifier: GPL-2.0-or-later
#include "fast_random.h"
// seed for random
static unsigned long g_seed = 0;
int fastrand(void) {
// todo : try with random16();
g_seed = (214013 * g_seed + 2531011);
return (g_seed >> 16) & 0x7FFF;
}
unsigned long fastrand_long(void) {
g_seed = (214013 * g_seed + 2531011);
return g_seed;
}