BizHawk/waterbox/libc/functions/string/strcat.c

45 lines
915 B
C

/* strcat( char *, const char * )
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
char * strcat( char * _PDCLIB_restrict s1, const char * _PDCLIB_restrict s2 )
{
char * rc = s1;
if ( *s1 )
{
while ( *++s1 );
}
while ( (*s1++ = *s2++) );
return rc;
}
#endif
#ifdef TEST
#include "_PDCLIB_test.h"
int main( void )
{
char s[] = "xx\0xxxxxx";
TESTCASE( strcat( s, abcde ) == s );
TESTCASE( s[2] == 'a' );
TESTCASE( s[6] == 'e' );
TESTCASE( s[7] == '\0' );
TESTCASE( s[8] == 'x' );
s[0] = '\0';
TESTCASE( strcat( s, abcdx ) == s );
TESTCASE( s[4] == 'x' );
TESTCASE( s[5] == '\0' );
TESTCASE( strcat( s, "\0" ) == s );
TESTCASE( s[5] == '\0' );
TESTCASE( s[6] == 'e' );
return TEST_RESULTS;
}
#endif