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author | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
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committer | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
commit | 094ca96844842928810f14844413109fc6cdd890 (patch) | |
tree | e60efbb980f38ba9308ccb4fb2b77b87bbc115f3 /imap/src/ansilib/memmove2.c | |
download | alpine-094ca96844842928810f14844413109fc6cdd890.tar.xz |
Initial Alpine Version
Diffstat (limited to 'imap/src/ansilib/memmove2.c')
-rw-r--r-- | imap/src/ansilib/memmove2.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/imap/src/ansilib/memmove2.c b/imap/src/ansilib/memmove2.c new file mode 100644 index 00000000..52532e21 --- /dev/null +++ b/imap/src/ansilib/memmove2.c @@ -0,0 +1,49 @@ +/* ======================================================================== + * Copyright 1988-2006 University of Washington + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * + * ======================================================================== + */ + +/* + * Program: Memory move when no bcopy() + * + * Author: Mark Crispin + * Networks and Distributed Computing + * Computing & Communications + * University of Washington + * Administration Building, AG-44 + * Seattle, WA 98195 + * Internet: MRC@CAC.Washington.EDU + * + * Date: 11 May 1989 + * Last Edited: 30 August 2006 + */ + +/* Copy memory block + * Accepts: destination pointer + * source pointer + * length + * Returns: destination pointer + */ + +void *memmove (void *s,void *ct,size_t n) +{ + char *dp,*sp; + int i; + unsigned long dest = (unsigned long) s; + unsigned long src = (unsigned long) ct; + if (((dest < src) && ((dest + n) < src)) || + ((dest > src) && ((src + n) < dest))) return (void *) memcpy (s,ct,n); + dp = (char *) s; + sp = (char *) ct; + if (dest < src) for (i = 0; i < n; ++i) dp[i] = sp[i]; + else if (dest > src) for (i = n - 1; i >= 0; --i) dp[i] = sp[i]; + return s; +} |