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Diffstat (limited to 'gcc-4.7/libiberty/memchr.c')
-rw-r--r-- | gcc-4.7/libiberty/memchr.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gcc-4.7/libiberty/memchr.c b/gcc-4.7/libiberty/memchr.c new file mode 100644 index 000000000..7448ab9e7 --- /dev/null +++ b/gcc-4.7/libiberty/memchr.c @@ -0,0 +1,33 @@ +/* + +@deftypefn Supplemental void* memchr (const void *@var{s}, int @var{c}, @ + size_t @var{n}) + +This function searches memory starting at @code{*@var{s}} for the +character @var{c}. The search only ends with the first occurrence of +@var{c}, or after @var{length} characters; in particular, a null +character does not terminate the search. If the character @var{c} is +found within @var{length} characters of @code{*@var{s}}, a pointer +to the character is returned. If @var{c} is not found, then @code{NULL} is +returned. + +@end deftypefn + +*/ + +#include <ansidecl.h> +#include <stddef.h> + +PTR +memchr (register const PTR src_void, int c, size_t length) +{ + const unsigned char *src = (const unsigned char *)src_void; + + while (length-- > 0) + { + if (*src == c) + return (PTR)src; + src++; + } + return NULL; +} |