45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SplitMix32 test program
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* Copyright (c) 2022 Joel K. Pettersson
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* <joelkpettersson@gmail.com>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "testwrite.h"
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#include "muvaror32.h"
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/*
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* Here's SplitMix32 for comparison and a quick test.
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*/
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//FIBH32 = 2654435769U
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/**
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* Get next value for and update \p pos.
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*/
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static inline uint32_t splitmix32(uint32_t *restrict pos) {
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uint32_t s = *pos += FIBH32;
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s ^= s >> 16;
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s *= 0x85ebca6b;
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s ^= s >> 13;
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s *= 0xc2b2ae35;
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s ^= s >> 16;
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return s;
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}
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int main(int argc, char *argv[]) {
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uint32_t pos = 0;
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for (;;) {
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/* SplitMix32 test */
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add_output(splitmix32(&pos));
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}
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return 0;
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} |