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MxFunctions.c
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MxFunctions.c
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//
// MxFunctions.c
// core_ds
//
#include <stdlib.h>
#include <string.h>
#include "MxFunctions.h"
/* Default implementation of MxFreeFunction - calls the stdlib free */
void MxDefaultFreeFunction(void *data) { free(data); }
/* Default MxEqualsFunction - tests for address equality */
int MxDefaultEqualsFunction(const void *first, const void *second) {
return (first == second);
}
int MxDefaultCompareFunction(const void *first, const void *second) {
if (first == second)
return 0;
if (first < second)
return -1;
return 1;
}
int MxDefaultCompareIntFunction(const void *first, const void *second) {
int f = *((int *)first);
int s = *((int *)second);
if (f == s)
return 0;
if (f < s)
return -1;
return 1;
}
int MxDefaultCStrCompareFunction(const void *first, const void *second)
{
return strcmp((const char *)first, (const char *)second);
}
int MxDefaultCStrEqualsFunction(const void *first, const void *second)
{
return (strcmp((const char *)first, (const char *)second) == 0);
}
unsigned long MxDefaultHashFunction(const void *key)
{
return (unsigned long)key;
}
/* Use djb2 algorithm as default string hash */
unsigned long MxDefaultStringHashFunction(const void *key)
{
unsigned long hash = 5381;
int c;
const char *str = (const char *)key;
while ((c = *str++))
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
return hash;
}