hash.c

/*
 Author: Daniele Fognini, Andreas Wuerl
 SPDX-FileCopyrightText: © 2013-2014 Siemens AG
 
 SPDX-License-Identifier: GPL-2.0-only
*/
 
#include "hash.h"
#include <stdio.h>
 
uint32_t hash(const char* string) {
 
  uint32_t result = hash_init();
 
  const char* ptr = string;
 
  while (*ptr) {
    hash_add(ptr, &result);
    ptr++;
  }
 
  return result;
}
 
uint32_t hash_init() {
  return 5231;
}
 
void hash_add(const char* value, uint32_t* currentHash) {
  *currentHash = ((*currentHash << 6) + *currentHash) + *value;
}