-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
+/* $Id$ */
-#include <__size_t.h>
+/* memmove( void *, const void *, size_t )
-void * memmove( void * dest, const void * src, size_t n )
+ 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 )
{
- const char * src_p = (const char *) src;
- char * dest_p = (char *) dest;
- if ( dest_p < src_p )
+ char * dest = (char *) s1;
+ const char * src = (const char *) s2;
+ if ( dest <= src )
{
while ( n-- )
{
- *dest_p++ = *src_p++;
+ *dest++ = *src++;
}
}
else
{
- src_p += n;
- dest_p += n;
+ src += n;
+ dest += n;
while ( n-- )
{
- *dest_p-- = *src_p--;
+ *--dest = *--src;
}
}
- return dest;
+ 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;
}
+#endif