Mercurial > hg > CbC > CbC_gcc
annotate libiberty/memchr.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | f6334be47118 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
3 @deftypefn Supplemental void* memchr (const void *@var{s}, int @var{c}, @ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
4 size_t @var{n}) |
| 0 | 5 |
| 6 This function searches memory starting at @code{*@var{s}} for the | |
| 7 character @var{c}. The search only ends with the first occurrence of | |
| 8 @var{c}, or after @var{length} characters; in particular, a null | |
| 9 character does not terminate the search. If the character @var{c} is | |
| 10 found within @var{length} characters of @code{*@var{s}}, a pointer | |
| 11 to the character is returned. If @var{c} is not found, then @code{NULL} is | |
| 12 returned. | |
| 13 | |
| 14 @end deftypefn | |
| 15 | |
| 16 */ | |
| 17 | |
| 18 #include <ansidecl.h> | |
| 19 #include <stddef.h> | |
| 20 | |
| 21 PTR | |
| 22 memchr (register const PTR src_void, int c, size_t length) | |
| 23 { | |
| 24 const unsigned char *src = (const unsigned char *)src_void; | |
| 25 | |
| 26 while (length-- > 0) | |
| 27 { | |
| 28 if (*src == c) | |
| 29 return (PTR)src; | |
| 30 src++; | |
| 31 } | |
| 32 return NULL; | |
| 33 } |