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31 lines
780 B
31 lines
780 B
#include <bit>
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#include <climits>
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#include <rng.h>
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#include <mem.h>
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#include <rng/crand.h>
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#include "crand.h"
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namespace rng
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{
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void crand::_deleter::delete_object(_opaque** state) { _jr_free(reinterpret_cast<jr_state*>(*state)); *state = nullptr; }
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crand::crand(_opaque* raw) :_state(mem::aligned_ptr<_opaque, _deleter>(raw)){}
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crand::crand(u64 seed) : crand(reinterpret_cast<_opaque*>(_jr_new(seed))){}
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crand::crand() : crand(0xabad1dea){}
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i64 crand::_sample_raw() { return _jr_proc(reinterpret_cast<jr_state*>(_state.get_ptr())); }
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//TODO: properly implemet this f64 crand::_sample() { return (f64)std::bit_cast<u64>(_sample_raw()) / (f64)UINT64_MAX; }
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}
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void rng_test()
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{
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rng::crand r(123);
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printf("%lu %lu %lu\n", r.next_u64(), r.next_u64(), r.next_u64());
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}
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