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eina: add crc hash function to eina hash module. 

Summary:
Added eina_hash_crc function in eina hash module to generate hash code
using crc-32.

Signed-off-by: vivek <vivek.ellur@samsung.com>

Reviewers: Sergeant_Whitespace, cedric

Subscribers: Sergeant_Whitespace, cedric

Differential Revision: https://phab.enlightenment.org/D2273

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>
This commit is contained in:
vivek 2015-04-28 23:33:56 +02:00 committed by Cedric BAIL
parent eec4a7bd0c
commit 1fdc58a580
2 changed files with 23 additions and 0 deletions
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11
src/lib/eina/eina_hash.h
View File

@ -1157,6 +1157,17 @@ static inline int eina_hash_int64(const unsigned long long int *pkey,
static inline int eina_hash_murmur3(const char *key,
int len) EINA_ARG_NONNULL(1);
/**
* @brief
* Hash function using crc-32 algorithm and and 0xEDB88320 polynomial
*
* @param key The key to hash
* @param len The length of the key
* @return The hash value
*/
static inline int eina_hash_crc(const char *key,
int len) EINA_ARG_NONNULL(1);
#include "eina_inline_hash.x"
/**

12
src/lib/eina/eina_inline_hash.x
View File

@ -19,6 +19,8 @@
#ifndef EINA_INLINE_HASH_X_
#define EINA_INLINE_HASH_X_
#include "eina_crc.h"
EAPI extern unsigned int eina_seed;
/*
@ -150,4 +152,14 @@ eina_hash_murmur3(const char *key, int len)
return _fmix32(h1);
}
static inline int
eina_hash_crc(const char *key, int len)
{
unsigned int crc;
unsigned int seed = 0xFFFFFFFF;
crc = eina_crc(key, len, seed, EINA_TRUE);
return (int)crc;
}
#endif