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1 /* bcopy -- copy memory regions of arbitary length
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2
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3 @deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})
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4
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5 Copies @var{length} bytes from memory region @var{in} to region
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6 @var{out}. The use of @code{bcopy} is deprecated in new programs.
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7
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8 @end deftypefn
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9
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10 */
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11
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12 #include <stddef.h>
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13
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14 void
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15 bcopy (const void *src, void *dest, size_t len)
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16 {
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17 if (dest < src)
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18 {
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19 const char *firsts = (const char *) src;
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20 char *firstd = (char *) dest;
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21 while (len--)
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22 *firstd++ = *firsts++;
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23 }
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24 else
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25 {
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26 const char *lasts = (const char *)src + (len-1);
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27 char *lastd = (char *)dest + (len-1);
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28 while (len--)
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29 *lastd-- = *lasts--;
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30 }
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31 }
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