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31 lines
694 B
31 lines
694 B
/* bcopy -- copy memory regions of arbitary length |
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@deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length}) |
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Copies @var{length} bytes from memory region @var{in} to region |
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@var{out}. The use of @code{bcopy} is deprecated in new programs. |
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@end deftypefn |
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*/ |
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#include <stddef.h> |
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void |
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bcopy (const void *src, void *dest, size_t len) |
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{ |
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if (dest < src) |
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{ |
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const char *firsts = (const char *) src; |
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char *firstd = (char *) dest; |
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while (len--) |
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*firstd++ = *firsts++; |
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} |
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else |
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{ |
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const char *lasts = (const char *)src + (len-1); |
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char *lastd = (char *)dest + (len-1); |
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while (len--) |
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*lastd-- = *lasts--; |
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} |
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}
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