X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdlib%2Fcalloc.c;h=e7117580a7e3f8f8e7275c2593600d3433b38b98;hb=b1fc26afebd4d557ff89a44bc21767a8704c3809;hp=5470427f4c3306d9caeb31a8744caf746184db0e;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdlib/calloc.c b/functions/stdlib/calloc.c
index 5470427..e711758 100644
--- a/functions/stdlib/calloc.c
+++ b/functions/stdlib/calloc.c
@@ -1,8 +1,47 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void * calloc( size_t nelem, size_t size ) { /* TODO */ };
+/* void * calloc( size_t, size_t )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef REGTEST
+
+void * calloc( size_t nmemb, size_t size )
+{
+    /* assign memory for nmemb elements of given size */
+    void * rc = malloc( nmemb * size );
+    if ( rc != NULL )
+    {
+        /* zero-initialize the memory */
+        memset( rc, 0, nmemb * size );
+    }
+    return rc;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    char * s;
+    TESTCASE( ( s = calloc( 3, 2 ) ) != NULL );
+    TESTCASE( s[0] == '\0' );
+    TESTCASE( s[5] == '\0' );
+    free( s );
+    TESTCASE( ( s = calloc( 6, 1 ) ) != NULL );
+    TESTCASE( s[0] == '\0' );
+    TESTCASE( s[5] == '\0' );
+    free( s );
+    TESTCASE( ( s = calloc( 1, 6 ) ) != NULL );
+    TESTCASE( s[0] == '\0' );
+    TESTCASE( s[5] == '\0' );
+    free( s );
+    return TEST_RESULTS;
+}
+
+#endif