X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fsnprintf.c;h=69d4106ffe74305cc47b2f4f1cab5a579b19cc1b;hb=0711226145f12c37217681b57944860bdeb6ace0;hp=dd2a972ece30807df414cb2753cb03bc4f10941b;hpb=1d9d92ba957a0b8307c9a65c35867fde68e6533b;p=pdclib

diff --git a/functions/stdio/snprintf.c b/functions/stdio/snprintf.c
index dd2a972..69d4106 100644
--- a/functions/stdio/snprintf.c
+++ b/functions/stdio/snprintf.c
@@ -1,8 +1,45 @@
-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * 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 */ };
+/* $Id$ */
+
+/* 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 <stdint.h>
+#include <stddef.h>
+
+#include <_PDCLIB_test.h>
+
+#define testprintf( s, ... ) snprintf( s, 100, __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