remove redundant files

hash/hash.c

@@ -1,82 +0,0 @@
-/*
-    author: Christian Bender
-    This is the implementation unit of the hash-functions.
-
-    Overview about hash-functions:
-
-    - sdbm
-    - djb2
-    - xor8 (8 bits)
-    - adler_32 (32 bits)
-*/
-
-long long sdbm(char s[])
-{
-    long long hash = 0;
-    int i = 0;
-    while (s[i] != '\0')
-    {
-        hash = s[i] + (hash << 6) + (hash << 16) - hash;
-        i++;
-    }
-    return hash;
-}
-
-long long djb2(char s[])
-{
-    long long hash = 5381; /* init value */
-    int i = 0;
-    while (s[i] != '\0')
-    {
-        hash = ((hash << 5) + hash) + s[i];
-        i++;
-    }
-    return hash;
-}
-
-char xor8(char s[])
-{
-    int hash = 0;
-    int i = 0;
-    while (s[i] != '\0')
-    {
-        hash = (hash + s[i]) & 0xff;
-        i++;
-    }
-    return (((hash ^ 0xff) + 1) & 0xff);
-}
-
-int adler_32(char s[])
-{
-    int a = 1;
-    int b = 0;
-    const int MODADLER = 65521;
-
-    int i = 0;
-    while (s[i] != '\0')
-    {
-        a = (a + s[i]) % MODADLER;
-        b = (b + a) % MODADLER;
-        i++;
-    }
-    return (b << 16) | a;
-}
-
-/* crc32 Hash-Algorithm*/
-#include <inttypes.h>
-
-uint32_t crc32(char *data)
-{
-    int i = 0;
-    uint32_t crc = 0xffffffff;
-    while (data[i] != '\0')
-    {
-        uint8_t byte = data[i];
-        crc = crc ^ byte;
-        for (int j = 8; j > 0; --j)
-            crc = (crc >> 1) ^ (0xEDB88320 & (-(crc & 1)));
-
-        i++;
-    }
-    return crc ^ 0xffffffff;
-}

hash/hash.h

@@ -1,49 +0,0 @@
-/*
-    author: Christian Bender
-    This file contains the public interface
-
-    Overview about hash-functions:
-
-    - sdbm
-    - djb2
-    - xor8 (8 bit)
-    - adler_32 (32 bits)
-*/
-
-#ifndef __HASH__H
-#define __HASH__H
-
-/*
-    sdbm: implements the sdbm hash-algorithm
-    returns a whole number of type long long.
-*/
-long long sdbm(char[]);
-
-/*
-    djb2: implements the djb2 hash-algorithm
-    returns a whole number of type long long.
-*/
-long long djb2(char[]);
-
-/*
-    xor8: implements the xor8 hash-algorithm
-    returns a whole number of type char.
-    length: 8 bit
-*/
-char xor8(char[]);
-
-/*
-    adler_32: implements the adler-32 hash-algorithm
-    returns a whole number of type int.
-    length: 32 bit
-    assumes: int has a length of 32 bits.
-*/
-int adler_32(char[]);
-
-/*
-    crc32: implements the crc-32 checksum-algorithm
-    returns the crc-32 checksum
-*/
-int crc32(char[]);
-
-#endif

hash/test_program.c

@@ -1,20 +0,0 @@
-/*
-    author: Christian Bender
-    This file contains a simple test program for each hash-function.
-*/
-
-#include <stdio.h>
-#include "hash.h"
-
-int main(void)
-{
-    char s[] = "hello";
-
-    /* actual tests */
-    printf("sdbm: %s --> %llX\n", s, sdbm(s));
-    printf("djb2: %s --> %llX\n", s, djb2(s));
-    printf("xor8: %s --> %X\n", s, xor8(s));         /* 8 bit */
-    printf("adler_32: %s --> %X\n", s, adler_32(s)); /* 32 bit */
-
-    return 0;
-}