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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Martin Decky |
2 | * Copyright (c) 2005 Martin Decky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <string.h> |
35 | #include <string.h> |
36 | #include <unistd.h> |
36 | #include <unistd.h> |
37 | #include <ctype.h> |
37 | #include <ctype.h> |
38 | #include <limits.h> |
38 | #include <limits.h> |
39 | #include <align.h> |
39 | #include <align.h> |
- | 40 | #include <sys/types.h> |
|
40 | 41 | ||
41 | 42 | ||
42 | /* Dummy implementation of mem/ functions */ |
43 | /* Dummy implementation of mem/ functions */ |
43 | 44 | ||
44 | void *memset(void *s, int c, size_t n) |
45 | void *memset(void *s, int c, size_t n) |
45 | { |
46 | { |
46 | char *os = s; |
47 | char *os = s; |
47 | 48 | ||
48 | while (n--) |
49 | while (n--) |
49 | *(os++) = c; |
50 | *(os++) = c; |
50 | 51 | ||
51 | return s; |
52 | return s; |
52 | } |
53 | } |
53 | 54 | ||
54 | struct along { |
55 | struct along { |
55 | unsigned long n; |
56 | unsigned long n; |
56 | } __attribute__ ((packed)); |
57 | } __attribute__ ((packed)); |
57 | 58 | ||
58 | static void *unaligned_memcpy(void *dst, const void *src, size_t n) |
59 | static void *unaligned_memcpy(void *dst, const void *src, size_t n) |
59 | { |
60 | { |
60 | int i, j; |
61 | int i, j; |
61 | struct along *adst = dst; |
62 | struct along *adst = dst; |
62 | const struct along *asrc = src; |
63 | const struct along *asrc = src; |
63 | 64 | ||
64 | for (i = 0; i < n / sizeof(unsigned long); i++) |
65 | for (i = 0; i < n / sizeof(unsigned long); i++) |
65 | adst[i].n = asrc[i].n; |
66 | adst[i].n = asrc[i].n; |
66 | 67 | ||
67 | for (j = 0; j < n % sizeof(unsigned long); j++) |
68 | for (j = 0; j < n % sizeof(unsigned long); j++) |
68 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = ((unsigned char *) (((unsigned long *) src) + i))[j]; |
69 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = ((unsigned char *) (((unsigned long *) src) + i))[j]; |
69 | 70 | ||
70 | return (char *) src; |
71 | return (char *) src; |
71 | } |
72 | } |
72 | 73 | ||
73 | void *memcpy(void *dst, const void *src, size_t n) |
74 | void *memcpy(void *dst, const void *src, size_t n) |
74 | { |
75 | { |
75 | int i, j; |
76 | int i, j; |
76 | 77 | ||
77 | if (((long) dst & (sizeof(long) - 1)) || ((long) src & (sizeof(long) - 1))) |
78 | if (((long) dst & (sizeof(long) - 1)) || ((long) src & (sizeof(long) - 1))) |
78 | return unaligned_memcpy(dst, src, n); |
79 | return unaligned_memcpy(dst, src, n); |
79 | 80 | ||
80 | for (i = 0; i < n / sizeof(unsigned long); i++) |
81 | for (i = 0; i < n / sizeof(unsigned long); i++) |
81 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
82 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
82 | 83 | ||
83 | for (j = 0; j < n % sizeof(unsigned long); j++) |
84 | for (j = 0; j < n % sizeof(unsigned long); j++) |
84 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = ((unsigned char *) (((unsigned long *) src) + i))[j]; |
85 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = ((unsigned char *) (((unsigned long *) src) + i))[j]; |
85 | 86 | ||
86 | return (char *) src; |
87 | return (char *) src; |
87 | } |
88 | } |
88 | 89 | ||
89 | void *memmove(void *dst, const void *src, size_t n) |
90 | void *memmove(void *dst, const void *src, size_t n) |
90 | { |
91 | { |
91 | int i, j; |
92 | int i, j; |
92 | 93 | ||
93 | if (src > dst) |
94 | if (src > dst) |
94 | return memcpy(dst, src, n); |
95 | return memcpy(dst, src, n); |
95 | 96 | ||
96 | for (j = (n % sizeof(unsigned long)) - 1; j >= 0; j--) |
97 | for (j = (n % sizeof(unsigned long)) - 1; j >= 0; j--) |
97 | ((unsigned char *) ((unsigned long *) dst))[j] = ((unsigned char *) ((unsigned long *) src))[j]; |
98 | ((unsigned char *) ((unsigned long *) dst))[j] = ((unsigned char *) ((unsigned long *) src))[j]; |
98 | 99 | ||
99 | for (i = n / sizeof(unsigned long) - 1; i >=0 ; i--) |
100 | for (i = n / sizeof(unsigned long) - 1; i >=0 ; i--) |
100 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
101 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
101 | 102 | ||
102 | return (char *) src; |
103 | return (char *) src; |
103 | } |
104 | } |
104 | 105 | ||
105 | /** Compare two memory areas. |
106 | /** Compare two memory areas. |
106 | * |
107 | * |
107 | * @param s1 Pointer to the first area to compare. |
108 | * @param s1 Pointer to the first area to compare. |
108 | * @param s2 Pointer to the second area to compare. |
109 | * @param s2 Pointer to the second area to compare. |
109 | * @param len Size of the first area in bytes. Both areas must have the same |
110 | * @param len Size of the first area in bytes. Both areas must have the same |
110 | * length. |
111 | * length. |
111 | * @return If len is 0, return zero. If the areas match, return zero. |
112 | * @return If len is 0, return zero. If the areas match, return zero. |
112 | * Otherwise return non-zero. |
113 | * Otherwise return non-zero. |
113 | */ |
114 | */ |
114 | int bcmp(const char *s1, const char *s2, size_t len) |
115 | int bcmp(const char *s1, const char *s2, size_t len) |
115 | { |
116 | { |
116 | for (; len && *s1++ == *s2++; len--) |
117 | for (; len && *s1++ == *s2++; len--) |
117 | ; |
118 | ; |
118 | return len; |
119 | return len; |
119 | } |
120 | } |
120 | 121 | ||
121 | /** Count the number of characters in the string, not including terminating 0. |
122 | /** Count the number of characters in the string, not including terminating 0. |
122 | * @param str string |
123 | * @param str string |
123 | * @return number of characters in string. |
124 | * @return number of characters in string. |
124 | */ |
125 | */ |
125 | size_t strlen(const char *str) |
126 | size_t strlen(const char *str) |
126 | { |
127 | { |
127 | size_t counter = 0; |
128 | size_t counter = 0; |
128 | 129 | ||
129 | while (str[counter] != 0) |
130 | while (str[counter] != 0) |
130 | counter++; |
131 | counter++; |
131 | 132 | ||
132 | return counter; |
133 | return counter; |
133 | } |
134 | } |
134 | 135 | ||
135 | int strcmp(const char *a, const char *b) |
136 | int strcmp(const char *a, const char *b) |
136 | { |
137 | { |
137 | int c = 0; |
138 | int c = 0; |
138 | 139 | ||
139 | while (a[c] && b[c] && (!(a[c] - b[c]))) |
140 | while (a[c] && b[c] && (!(a[c] - b[c]))) |
140 | c++; |
141 | c++; |
141 | 142 | ||
142 | return (a[c] - b[c]); |
143 | return (a[c] - b[c]); |
143 | 144 | ||
144 | } |
145 | } |
145 | 146 | ||
146 | 147 | ||
147 | /** Return pointer to the first occurence of character c in string |
148 | /** Return pointer to the first occurence of character c in string |
148 | * @param str scanned string |
149 | * @param str scanned string |
149 | * @param c searched character (taken as one byte) |
150 | * @param c searched character (taken as one byte) |
150 | * @return pointer to the matched character or NULL if it is not found in given string. |
151 | * @return pointer to the matched character or NULL if it is not found in given string. |
151 | */ |
152 | */ |
152 | char *strchr(const char *str, int c) |
153 | char *strchr(const char *str, int c) |
153 | { |
154 | { |
154 | while (*str != '\0') { |
155 | while (*str != '\0') { |
155 | if (*str == (char) c) |
156 | if (*str == (char) c) |
156 | return (char *) str; |
157 | return (char *) str; |
157 | str++; |
158 | str++; |
158 | } |
159 | } |
159 | 160 | ||
160 | return NULL; |
161 | return NULL; |
161 | } |
162 | } |
162 | 163 | ||
163 | /** Return pointer to the last occurence of character c in string |
164 | /** Return pointer to the last occurence of character c in string |
164 | * @param str scanned string |
165 | * @param str scanned string |
165 | * @param c searched character (taken as one byte) |
166 | * @param c searched character (taken as one byte) |
166 | * @return pointer to the matched character or NULL if it is not found in given string. |
167 | * @return pointer to the matched character or NULL if it is not found in given string. |
167 | */ |
168 | */ |
168 | char *strrchr(const char *str, int c) |
169 | char *strrchr(const char *str, int c) |
169 | { |
170 | { |
170 | char *retval = NULL; |
171 | char *retval = NULL; |
171 | 172 | ||
172 | while (*str != '\0') { |
173 | while (*str != '\0') { |
173 | if (*str == (char) c) |
174 | if (*str == (char) c) |
174 | retval = (char *) str; |
175 | retval = (char *) str; |
175 | str++; |
176 | str++; |
176 | } |
177 | } |
177 | 178 | ||
178 | return (char *) retval; |
179 | return (char *) retval; |
179 | } |
180 | } |
180 | 181 | ||
181 | /** Convert string to a number. |
182 | /** Convert string to a number. |
182 | * Core of strtol and strtoul functions. |
183 | * Core of strtol and strtoul functions. |
183 | * @param nptr pointer to string |
184 | * @param nptr pointer to string |
184 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
185 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
185 | * @param base zero or number between 2 and 36 inclusive |
186 | * @param base zero or number between 2 and 36 inclusive |
186 | * @param sgn its set to 1 if minus found |
187 | * @param sgn its set to 1 if minus found |
187 | * @return result of conversion. |
188 | * @return result of conversion. |
188 | */ |
189 | */ |
189 | static unsigned long _strtoul(const char *nptr, char **endptr, int base, char *sgn) |
190 | static unsigned long _strtoul(const char *nptr, char **endptr, int base, char *sgn) |
190 | { |
191 | { |
191 | unsigned char c; |
192 | unsigned char c; |
192 | unsigned long result = 0; |
193 | unsigned long result = 0; |
193 | unsigned long a, b; |
194 | unsigned long a, b; |
194 | const char *str = nptr; |
195 | const char *str = nptr; |
195 | const char *tmpptr; |
196 | const char *tmpptr; |
196 | 197 | ||
197 | while (isspace(*str)) |
198 | while (isspace(*str)) |
198 | str++; |
199 | str++; |
199 | 200 | ||
200 | if (*str == '-') { |
201 | if (*str == '-') { |
201 | *sgn = 1; |
202 | *sgn = 1; |
202 | ++str; |
203 | ++str; |
203 | } else if (*str == '+') |
204 | } else if (*str == '+') |
204 | ++str; |
205 | ++str; |
205 | 206 | ||
206 | if (base) { |
207 | if (base) { |
207 | if ((base == 1) || (base > 36)) { |
208 | if ((base == 1) || (base > 36)) { |
208 | /* FIXME: set errno to EINVAL */ |
209 | /* FIXME: set errno to EINVAL */ |
209 | return 0; |
210 | return 0; |
210 | } |
211 | } |
211 | if ((base == 16) && (*str == '0') && ((str[1] == 'x') || (str[1] == 'X'))) { |
212 | if ((base == 16) && (*str == '0') && ((str[1] == 'x') || (str[1] == 'X'))) { |
212 | str += 2; |
213 | str += 2; |
213 | } |
214 | } |
214 | } else { |
215 | } else { |
215 | base = 10; |
216 | base = 10; |
216 | 217 | ||
217 | if (*str == '0') { |
218 | if (*str == '0') { |
218 | base = 8; |
219 | base = 8; |
219 | if ((str[1] == 'X') || (str[1] == 'x')) { |
220 | if ((str[1] == 'X') || (str[1] == 'x')) { |
220 | base = 16; |
221 | base = 16; |
221 | str += 2; |
222 | str += 2; |
222 | } |
223 | } |
223 | } |
224 | } |
224 | } |
225 | } |
225 | 226 | ||
226 | tmpptr = str; |
227 | tmpptr = str; |
227 | 228 | ||
228 | while (*str) { |
229 | while (*str) { |
229 | c = *str; |
230 | c = *str; |
230 | c = (c >= 'a' ? c - 'a' + 10 : (c >= 'A' ? c - 'A' + 10 : (c <= '9' ? c - '0' : 0xff))); |
231 | c = (c >= 'a' ? c - 'a' + 10 : (c >= 'A' ? c - 'A' + 10 : (c <= '9' ? c - '0' : 0xff))); |
231 | if (c > base) { |
232 | if (c > base) { |
232 | break; |
233 | break; |
233 | } |
234 | } |
234 | 235 | ||
235 | a = (result & 0xff) * base + c; |
236 | a = (result & 0xff) * base + c; |
236 | b = (result >> 8) * base + (a >> 8); |
237 | b = (result >> 8) * base + (a >> 8); |
237 | 238 | ||
238 | if (b > (ULONG_MAX >> 8)) { |
239 | if (b > (ULONG_MAX >> 8)) { |
239 | /* overflow */ |
240 | /* overflow */ |
240 | /* FIXME: errno = ERANGE*/ |
241 | /* FIXME: errno = ERANGE*/ |
241 | return ULONG_MAX; |
242 | return ULONG_MAX; |
242 | } |
243 | } |
243 | 244 | ||
244 | result = (b << 8) + (a & 0xff); |
245 | result = (b << 8) + (a & 0xff); |
245 | ++str; |
246 | ++str; |
246 | } |
247 | } |
247 | 248 | ||
248 | if (str == tmpptr) { |
249 | if (str == tmpptr) { |
249 | /* no number was found => first invalid character is the first character of the string */ |
250 | /* no number was found => first invalid character is the first character of the string */ |
250 | /* FIXME: set errno to EINVAL */ |
251 | /* FIXME: set errno to EINVAL */ |
251 | str = nptr; |
252 | str = nptr; |
252 | result = 0; |
253 | result = 0; |
253 | } |
254 | } |
254 | 255 | ||
255 | if (endptr) |
256 | if (endptr) |
256 | *endptr = (char *) str; |
257 | *endptr = (char *) str; |
257 | 258 | ||
258 | if (nptr == str) { |
259 | if (nptr == str) { |
259 | /*FIXME: errno = EINVAL*/ |
260 | /*FIXME: errno = EINVAL*/ |
260 | return 0; |
261 | return 0; |
261 | } |
262 | } |
262 | 263 | ||
263 | return result; |
264 | return result; |
264 | } |
265 | } |
265 | 266 | ||
266 | /** Convert initial part of string to long int according to given base. |
267 | /** Convert initial part of string to long int according to given base. |
267 | * The number may begin with an arbitrary number of whitespaces followed by optional sign (`+' or `-'). |
268 | * The number may begin with an arbitrary number of whitespaces followed by optional sign (`+' or `-'). |
268 | * If the base is 0 or 16, the prefix `0x' may be inserted and the number will be taken as hexadecimal one. |
269 | * If the base is 0 or 16, the prefix `0x' may be inserted and the number will be taken as hexadecimal one. |
269 | * If the base is 0 and the number begin with a zero, number will be taken as octal one (as with base 8). |
270 | * If the base is 0 and the number begin with a zero, number will be taken as octal one (as with base 8). |
270 | * Otherwise the base 0 is taken as decimal. |
271 | * Otherwise the base 0 is taken as decimal. |
271 | * @param nptr pointer to string |
272 | * @param nptr pointer to string |
272 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
273 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
273 | * @param base zero or number between 2 and 36 inclusive |
274 | * @param base zero or number between 2 and 36 inclusive |
274 | * @return result of conversion. |
275 | * @return result of conversion. |
275 | */ |
276 | */ |
276 | long int strtol(const char *nptr, char **endptr, int base) |
277 | long int strtol(const char *nptr, char **endptr, int base) |
277 | { |
278 | { |
278 | char sgn = 0; |
279 | char sgn = 0; |
279 | unsigned long number = 0; |
280 | unsigned long number = 0; |
280 | 281 | ||
281 | number = _strtoul(nptr, endptr, base, &sgn); |
282 | number = _strtoul(nptr, endptr, base, &sgn); |
282 | 283 | ||
283 | if (number > LONG_MAX) { |
284 | if (number > LONG_MAX) { |
284 | if ((sgn) && (number == (unsigned long) (LONG_MAX) + 1)) { |
285 | if ((sgn) && (number == (unsigned long) (LONG_MAX) + 1)) { |
285 | /* FIXME: set 0 to errno */ |
286 | /* FIXME: set 0 to errno */ |
286 | return number; |
287 | return number; |
287 | } |
288 | } |
288 | /* FIXME: set ERANGE to errno */ |
289 | /* FIXME: set ERANGE to errno */ |
289 | return (sgn ? LONG_MIN : LONG_MAX); |
290 | return (sgn ? LONG_MIN : LONG_MAX); |
290 | } |
291 | } |
291 | 292 | ||
292 | return (sgn ? -number : number); |
293 | return (sgn ? -number : number); |
293 | } |
294 | } |
294 | 295 | ||
295 | 296 | ||
296 | /** Convert initial part of string to unsigned long according to given base. |
297 | /** Convert initial part of string to unsigned long according to given base. |
297 | * The number may begin with an arbitrary number of whitespaces followed by optional sign (`+' or `-'). |
298 | * The number may begin with an arbitrary number of whitespaces followed by optional sign (`+' or `-'). |
298 | * If the base is 0 or 16, the prefix `0x' may be inserted and the number will be taken as hexadecimal one. |
299 | * If the base is 0 or 16, the prefix `0x' may be inserted and the number will be taken as hexadecimal one. |
299 | * If the base is 0 and the number begin with a zero, number will be taken as octal one (as with base 8). |
300 | * If the base is 0 and the number begin with a zero, number will be taken as octal one (as with base 8). |
300 | * Otherwise the base 0 is taken as decimal. |
301 | * Otherwise the base 0 is taken as decimal. |
301 | * @param nptr pointer to string |
302 | * @param nptr pointer to string |
302 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
303 | * @param endptr if not NULL, function stores here pointer to the first invalid character |
303 | * @param base zero or number between 2 and 36 inclusive |
304 | * @param base zero or number between 2 and 36 inclusive |
304 | * @return result of conversion. |
305 | * @return result of conversion. |
305 | */ |
306 | */ |
306 | unsigned long strtoul(const char *nptr, char **endptr, int base) |
307 | unsigned long strtoul(const char *nptr, char **endptr, int base) |
307 | { |
308 | { |
308 | char sgn = 0; |
309 | char sgn = 0; |
309 | unsigned long number = 0; |
310 | unsigned long number = 0; |
310 | 311 | ||
311 | number = _strtoul(nptr, endptr, base, &sgn); |
312 | number = _strtoul(nptr, endptr, base, &sgn); |
312 | 313 | ||
313 | return (sgn ? -number : number); |
314 | return (sgn ? -number : number); |
314 | } |
315 | } |
315 | 316 | ||
316 | char *strcpy(char *dest, const char *src) |
317 | char *strcpy(char *dest, const char *src) |
317 | { |
318 | { |
318 | char *orig = dest; |
319 | char *orig = dest; |
319 | 320 | ||
320 | while ((*(dest++) = *(src++))); |
321 | while ((*(dest++) = *(src++))); |
321 | return orig; |
322 | return orig; |
322 | } |
323 | } |
323 | 324 | ||
324 | char *strncpy(char *dest, const char *src, size_t n) |
325 | char *strncpy(char *dest, const char *src, size_t n) |
325 | { |
326 | { |
326 | char *orig = dest; |
327 | char *orig = dest; |
327 | 328 | ||
328 | while ((*(dest++) = *(src++)) && --n); |
329 | while ((*(dest++) = *(src++)) && --n); |
329 | return orig; |
330 | return orig; |
330 | } |
331 | } |
331 | 332 | ||
332 | /** @} |
333 | /** @} |
333 | */ |
334 | */ |
334 | 335 |