Revision 15274,
686 bytes
checked in by ghudson, 24 years ago
(diff) |
This commit was generated by cvs2svn to compensate for changes in r15273,
which included commits to RCS files with non-trunk default branches.
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1 | /* memmove.c -- copy memory. |
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2 | Copy LENGTH bytes from SOURCE to DEST. Does not null-terminate. |
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3 | In the public domain. |
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4 | By David MacKenzie <djm@gnu.ai.mit.edu>. */ |
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5 | |
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6 | #if HAVE_CONFIG_H |
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7 | # include <config.h> |
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8 | #endif |
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9 | |
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10 | void * |
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11 | memmove (dest, source, length) |
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12 | char *dest; |
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13 | const char *source; |
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14 | unsigned length; |
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15 | { |
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16 | char *d0 = dest; |
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17 | if (source < dest) |
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18 | /* Moving from low mem to hi mem; start at end. */ |
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19 | for (source += length, dest += length; length; --length) |
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20 | *--dest = *--source; |
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21 | else if (source != dest) |
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22 | { |
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23 | /* Moving from hi mem to low mem; start at beginning. */ |
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24 | for (; length; --length) |
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25 | *dest++ = *source++; |
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26 | } |
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27 | return (void *) d0; |
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28 | } |
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