Fix bit operations. Test them (a bit) better.

[u/mdw/catacomb] / bittest.c

diff --git a/bittest.c b/bittest.c
new file mode 100644 (file)
index 0000000..54bc6d5
--- /dev/null
+++ b/bittest.c
@@ -0,0 +1,66 @@
+/* -*-c-*-
+ *
+ * $Id: bittest.c,v 1.1 2002/10/19 17:56:50 mdw Exp $
+ *
+ * Check the bit operations work
+ *
+ * (c) 2002 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------* 
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ * 
+ * Catacomb is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------* 
+ *
+ * $Log: bittest.c,v $
+ * Revision 1.1  2002/10/19 17:56:50  mdw
+ * Fix bit operations.  Test them (a bit) better.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+#include <string.h>
+#include "bitops.h"
+#include "mpx.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+int main(void)
+{
+  int rc = 0;
+#define CHECK(string) do {                                             \
+  const char *ref = #string;                                           \
+  char buf[5];                                                         \
+  buf[0] = B##string(0u, 0u) & 1u? '1' : '0';                          \
+  buf[1] = B##string(0u, 1u) & 1u? '1' : '0';                          \
+  buf[2] = B##string(1u, 0u) & 1u? '1' : '0';                          \
+  buf[3] = B##string(1u, 1u) & 1u? '1' : '0';                          \
+  buf[4] = 0;                                                          \
+  if (strcmp(buf, ref) != 0) {                                         \
+    fprintf(stderr, "mismatch ref `%s' != buf `%s'\n", ref, buf);      \
+    rc = 1;                                                            \
+  }                                                                    \
+} while (0);
+  MPX_DOBIN(CHECK)
+  return (rc);
+}
+/*----- That's all, folks -------------------------------------------------*/