From ec4ad61acbe9e67c5e803e0549841dc5ef5cef2a Mon Sep 17 00:00:00 2001 From: boris Date: Wed, 12 Dec 2018 12:30:44 +1300 Subject: yas --- loader/server/fnv.hpp | 64 --------------------------------------------------- 1 file changed, 64 deletions(-) delete mode 100644 loader/server/fnv.hpp (limited to 'loader/server/fnv.hpp') diff --git a/loader/server/fnv.hpp b/loader/server/fnv.hpp deleted file mode 100644 index 08a478b..0000000 --- a/loader/server/fnv.hpp +++ /dev/null @@ -1,64 +0,0 @@ -#pragma once - -#pragma warning( disable : 4307 ) // '*': integral constant overflow -#pragma warning( disable : 4244 ) // possible loss of data - -#include -#include - -using hash_t = unsigned int; - -// used for compile-time FNV-1a 32bit hashes. -#define fnv( str ) \ - [&]() { \ - constexpr hash_t out = hash::fnv1a( str ); \ - \ - return out; \ - }() - -// used for compile-time FNV-1a 32bit hashes when above macro cant be used for constexpr variables. -#define fnv_const( str ) Hash::fnv1a_32( str ) - -namespace hash // FNV-1a ( Fowler-Noll-Vo hash ). -{ - // FNV-1a constants. - enum : hash_t { - FNV1A_PRIME = 0x1000193, - FNV1A_BASIS = 0x811C9DC5 - }; - - // compile-time strlen. - __forceinline constexpr size_t ct_strlen( const char *str ) { - size_t out = 1; - - for( ; str[ out ] != '\0'; ++out ); - - return out; - } - - // hash data. - __forceinline constexpr hash_t fnv1a( const uint8_t *data, const size_t len ) { - hash_t out = FNV1A_BASIS; - - for( size_t i = 0; i < len; ++i ) - out = ( out ^ data[ i ] ) * FNV1A_PRIME; - - return out; - } - - // hash c-style string. - __forceinline constexpr hash_t fnv1a( const char *str ) { - hash_t out = FNV1A_BASIS; - size_t len = ct_strlen( str ); - - for( size_t i = 0; i < len; ++i ) - out = ( out ^ str[ i ] ) * FNV1A_PRIME; - - return out; - } - - // hash C++-style string ( runtime only ). - __forceinline hash_t fnv1a( const std::string &str ) { - return fnv1a( ( uint8_t* )str.c_str( ), str.length( ) ); - } -} \ No newline at end of file -- cgit v1.2.3