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/* $OpenBSD: ialloc.c,v 1.11 2007/06/30 13:20:42 millert Exp $ */
/*
** This file is in the public domain, so clarified as of
** Feb 14, 2003 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
/*LINTLIBRARY*/
#include "private.h"
#define nonzero(n) (((n) == 0) ? 1 : (n))
char *
imalloc(n)
const int n;
{
return malloc((size_t) nonzero(n));
}
char *
icalloc(nelem, elsize)
int nelem;
int elsize;
{
if (nelem == 0 || elsize == 0)
nelem = elsize = 1;
return calloc((size_t) nelem, (size_t) elsize);
}
void *
irealloc(pointer, size)
void * const pointer;
const int size;
{
void *p;
if (pointer == NULL)
return imalloc(size);
p = realloc((void *) pointer, (size_t) nonzero(size));
if (p == NULL)
free(pointer);
return p;
}
char *
icatalloc(old, new)
char * const old;
const char * const new;
{
register char * result;
register int oldsize, newsize;
newsize = (new == NULL) ? 0 : strlen(new);
if (old == NULL)
oldsize = 0;
else if (newsize == 0)
return old;
else
oldsize = strlen(old);
if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
if (new != NULL)
(void) memcpy(result + oldsize, new, newsize + 1);
return result;
}
char *
icpyalloc(string)
const char * const string;
{
return icatalloc((char *) NULL, string);
}
void
ifree(p)
char * const p;
{
if (p != NULL)
(void) free(p);
}
void
icfree(p)
char * const p;
{
if (p != NULL)
(void) free(p);
}
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