-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
-void * memmove( void * s1, const void * s2, size_t n ) { /* TODO */ };
+/* memmove( void *, const void *, size_t )
-/* PDPC code - unreviewed
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+#ifndef REGTEST
+
+void * memmove( void * s1, const void * s2, size_t n )
{
- char *p = s1;
- const char *cs2 = s2;
- size_t x;
-
- if (p <= cs2)
+ char * dest = (char *) s1;
+ const char * src = (const char *) s2;
+ if ( dest <= src )
{
- for (x=0; x < n; x++)
+ while ( n-- )
{
- *p = *cs2;
- p++;
- cs2++;
+ *dest++ = *src++;
}
}
else
{
- if (n != 0)
+ src += n;
+ dest += n;
+ while ( n-- )
{
- for (x=n-1; x > 0; x--)
- {
- *(p+x) = *(cs2+x);
- }
+ *--dest = *--src;
}
- *(p+x) = *(cs2+x);
}
- return (s1);
+ return s1;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ char s[] = "xxxxabcde";
+ TESTCASE( memmove( s, s + 4, 5 ) == s );
+ TESTCASE( s[0] == 'a' );
+ TESTCASE( s[4] == 'e' );
+ TESTCASE( s[5] == 'b' );
+ TESTCASE( memmove( s + 4, s, 5 ) == s + 4 );
+ TESTCASE( s[4] == 'a' );
+ return TEST_RESULTS;
}
-*/
\ No newline at end of file
+#endif