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Added 16 bit generic_hash for systems where size_t is 16 bit.

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This commit is contained in:
John Wellbelove 2016-07-01 22:21:35 +01:00
parent eea2af244b
commit cb9f619107
1 changed files with 15 additions and 0 deletions
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15
src/hash.h
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@ -45,8 +45,22 @@ namespace etl
{
namespace __private_hash__
{
//*************************************************************************
/// Hash to use when size_t is 16 bits.
/// T is always expected to be size_t.
//*************************************************************************
template <typename T>
typename enable_if<sizeof(T) == sizeof(uint16_t), size_t>::type
generic_hash(uint8_t* begin, uint8_t* end)
{
uint32_t h = fnv_1a_32(begin, end);
return static_cast<size_t>(h ^ (h >> 16));
}
//*************************************************************************
/// Hash to use when size_t is 32 bits.
/// T is always expected to be size_t.
//*************************************************************************
template <typename T>
typename enable_if<sizeof(T) == sizeof(uint32_t), size_t>::type
@ -57,6 +71,7 @@ namespace etl
//*************************************************************************
/// Hash to use when size_t is 64 bits.
/// T is always expected to be size_t.
//*************************************************************************
template <typename T>
typename enable_if<sizeof(T) == sizeof(uint64_t), size_t>::type