user
41 lines
923 B
C++
41 lines
923 B
C++
#ifndef FUNCTION_FNV1a_H
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#define FUNCTION_FNV1a_H
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#include "family.h"
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BEGIN_NAMESPACE(BusinessLogic)
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BEGIN_NAMESPACE(Hash)
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BEGIN_NAMESPACE(Function)
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BEGIN_NAMESPACE(FNV1a)
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using Singleton = BusinessLogic::Pattern::Singleton<Product>;
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class Product final : public Family::Product, public Singleton
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{
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private:
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const int32_t m_p;
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private:
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friend const Product &Singleton::getInstance();
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Product()
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: Family::Product(
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[this](size_t value, size_t i) -> size_t {
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size_t result = (0x811C9DC5 xor i) xor static_cast<int32_t>(value);
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return static_cast<int32_t>(result * m_p);
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}
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)
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, m_p(0x01000193)
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{
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}
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public:
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using Singleton::getInstance;
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};
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END_NAMESPACE // FNV1a
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END_NAMESPACE // Function
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END_NAMESPACE // Hash
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END_NAMESPACE // BusinessLogic
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#endif // !FUNCTION_FNV1a_H
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