/* $Id$ */
-/* Release $Name$ */
-
/* strncmp( const char *, const char *, size_t )
This file is part of the Public Domain C Library (PDCLib).
#include <string.h>
+#ifndef REGTEST
+
int strncmp( const char * s1, const char * s2, size_t n )
{
- while ( n && ( *s1 == *s2 ) )
+ while ( *s1 && n && ( *s1 == *s2 ) )
{
++s1;
++s2;
}
else
{
- return ( *s1 - *s2 );
+ return ( *(unsigned char *)s1 - *(unsigned char *)s2 );
}
}
-#warning Test driver missing.
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ char cmpabcde[] = "abcde\0f";
+ char cmpabcd_[] = "abcde\xfc";
+ char empty[] = "";
+ char x[] = "x";
+ TESTCASE( strncmp( abcde, cmpabcde, 5 ) == 0 );
+ TESTCASE( strncmp( abcde, cmpabcde, 10 ) == 0 );
+ TESTCASE( strncmp( abcde, abcdx, 5 ) < 0 );
+ TESTCASE( strncmp( abcdx, abcde, 5 ) > 0 );
+ TESTCASE( strncmp( empty, abcde, 5 ) < 0 );
+ TESTCASE( strncmp( abcde, empty, 5 ) > 0 );
+ TESTCASE( strncmp( abcde, abcdx, 4 ) == 0 );
+ TESTCASE( strncmp( abcde, x, 0 ) == 0 );
+ TESTCASE( strncmp( abcde, x, 1 ) < 0 );
+ TESTCASE( strncmp( abcde, cmpabcd_, 10 ) < 0 );
+ return TEST_RESULTS;
+}
+#endif