Comment cleanups.

[pdclib] / functions / stdlib / calloc.c

diff --git a/functions/stdlib/calloc.c b/functions/stdlib/calloc.c
index 4169f84c60c8ff80ea338a13dd50044e8ad85bb7..e7117580a7e3f8f8e7275c2593600d3433b38b98 100644 (file)
--- a/functions/stdlib/calloc.c
+++ b/functions/stdlib/calloc.c
@@ -1,34 +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, size_t )
 
-void * calloc( size_t nelem, size_t size ) { /* TODO */ };
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
 
-/* PDPC code - unreviewed
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef REGTEST
+
+void * calloc( size_t nmemb, size_t size )
 {
-    void *ptr;
-    size_t total;
-    
-    if (nmemb == 1)
-    {
-        total = size;
-    }
-    else if (size == 1)
-    {
-        total = nmemb;
-    }
-    else
-    {
-        total = nmemb * size;
-    }
-    ptr = malloc(total);
-    if (ptr != NULL)
+    /* assign memory for nmemb elements of given size */
+    void * rc = malloc( nmemb * size );
+    if ( rc != NULL )
     {
-        memset(ptr, '\0', total);
+        /* zero-initialize the memory */
+        memset( rc, 0, nmemb * size );
     }
-    return (ptr);
+    return rc;
 }
-*/
\ No newline at end of file
+
+#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