1 /*
2 ** This file is in the public domain, so clarified as of
3 ** 2006-07-17 by Arthur David Olson.
4 */
5
6 #ifndef lint
7 #ifndef NOID
8 static const char elsieid[] = "@(#)ialloc.c 8.30";
9 #endif /* !defined NOID */
10 #endif /* !defined lint */
11
12 #ifndef lint
13 static const char rcsid[] =
14 "$FreeBSD$";
15 #endif /* not lint */
16
17 /*LINTLIBRARY*/
18
19 #include "private.h"
20
21 #define nonzero(n) (((n) == 0) ? 1 : (n))
22
23 char *
imalloc(n)24 imalloc(n)
25 const int n;
26 {
27 return malloc((size_t) nonzero(n));
28 }
29
30 char *
icalloc(nelem,elsize)31 icalloc(nelem, elsize)
32 int nelem;
33 int elsize;
34 {
35 if (nelem == 0 || elsize == 0)
36 nelem = elsize = 1;
37 return calloc((size_t) nelem, (size_t) elsize);
38 }
39
40 void *
irealloc(pointer,size)41 irealloc(pointer, size)
42 void * const pointer;
43 const int size;
44 {
45 if (pointer == NULL)
46 return imalloc(size);
47 return realloc((void *) pointer, (size_t) nonzero(size));
48 }
49
50 char *
icatalloc(old,new)51 icatalloc(old, new)
52 char * const old;
53 const char * const new;
54 {
55 register char * result;
56 register int oldsize, newsize;
57
58 newsize = (new == NULL) ? 0 : strlen(new);
59 if (old == NULL)
60 oldsize = 0;
61 else if (newsize == 0)
62 return old;
63 else oldsize = strlen(old);
64 if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
65 if (new != NULL)
66 (void) strcpy(result + oldsize, new);
67 return result;
68 }
69
70 char *
icpyalloc(string)71 icpyalloc(string)
72 const char * const string;
73 {
74 return icatalloc((char *) NULL, string);
75 }
76
77 void
ifree(p)78 ifree(p)
79 char * const p;
80 {
81 if (p != NULL)
82 (void) free(p);
83 }
84
85 void
icfree(p)86 icfree(p)
87 char * const p;
88 {
89 if (p != NULL)
90 (void) free(p);
91 }
92