X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fsnprintf.c;h=e1a695678cc3f4c6909e19afb86837e6a223bf96;hb=d6f1494a4f38a212b29a13ee713885058dcf0fe7;hp=f4b7ebfd492dd2006d6841e153fb8f5b72f57124;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/snprintf.c b/functions/stdio/snprintf.c
index f4b7ebf..e1a6956 100644
--- a/functions/stdio/snprintf.c
+++ b/functions/stdio/snprintf.c
@@ -1,8 +1,41 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-int snprintf( char * restrict s, size_t n, const char * restrict format, ... ) { /* TODO */ };
+/* snprintf( char *, size_t, 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 <stdio.h>
+#include <stdarg.h>
+
+#ifndef REGTEST
+
+int snprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restrict format, ...)
+{
+    int rc;
+    va_list ap;
+    va_start( ap, format );
+    rc = vsnprintf( s, n, format, ap );
+    va_end( ap );
+    return rc;
+}
+
+#endif
+
+#ifdef TEST
+#define _PDCLIB_FILEID "stdio/snprintf.c"
+#define _PDCLIB_STRINGIO
+
+#include "_PDCLIB_test.h"
+
+#define testprintf( s, format, ... ) snprintf( s, 100, format, __VA_ARGS__ )
+
+int main( void )
+{
+    char target[100];
+#include "printf_testcases.h"
+    TESTCASE( snprintf( NULL, 0, "foo" ) == 3 );
+    TESTCASE( snprintf( NULL, 0, "%d", 100 ) == 3 );
+    return TEST_RESULTS;
+}
+
+#endif