* Chill runtime moved into toplevel libchill.

        * Makefile.in Revamped due to move.  Add multilib support.
        * configure.in: Similarly.  Use autoconf.
        * powerset.h: Do not depend on BITS_PER_UNIT.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22238 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 85 insertions, 0 deletions

diff --git a/libchill/setbits.c b/libchill/setbits.c
new file mode 100644
index 00000000000..1e3045c8877
--- /dev/null
+++ b/libchill/setbits.c
@@ -0,0 +1,85 @@
+/* Implement POWERSET runtime actions for CHILL.
+   Copyright (C) 1992,1993 Free Software Foundation, Inc.
+   Author: Wilfried Moser, et al
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define __CHILL_LIB__
+
+#include "config.h"
+#include <stdio.h>
+#include "powerset.h"
+
+extern void __cause_ex1 (char *exname, char *file, int lineno);
+
+/*
+ * function __setbits
+ *
+ * parameters:
+ *	out		result
+ *      bitlength       length of bitstring in bits
+ *	startbit	starting bitnumber
+ *	endbit		ending bitnumber
+ *
+ * returns:
+ *	void
+ *
+ * exceptions:
+ *   rangefail
+ *
+ * abstract:
+ *  set all bits from starting bitnumber to ending bitnumber
+ *  in a powerset
+ *
+ */
+void
+__setbits (out, bitlength, startbit, endbit)
+     SET_WORD      *out;
+     unsigned long  bitlength;
+     long  startbit;
+     long  endbit;
+{
+  unsigned long i;
+  
+  if (out == NULL
+      || startbit < 0
+      || startbit >= bitlength 
+      || endbit < 0
+      || endbit >= bitlength 
+      || endbit < startbit)
+    __cause_ex1 ("rangefail", "__setbits", __LINE__);
+  
+  if (bitlength <= SET_CHAR_SIZE)
+    for (i = startbit; i <= endbit; i++)
+      SET_BIT_IN_CHAR (*((SET_CHAR *)out), i);
+  else if (bitlength <= SET_SHORT_SIZE)
+    for (i = startbit; i <= endbit; i++)
+      SET_BIT_IN_SHORT (*((SET_SHORT *)out), i);
+  else
+    {
+      SET_WORD	*p;
+      unsigned long       bitnr;
+      
+      /* FIXME - this is inefficient! */
+      for (i = startbit; i <= endbit; i++)
+	{
+	  p = out + (i / SET_WORD_SIZE);
+	  bitnr = i % SET_WORD_SIZE;
+	  SET_BIT_IN_WORD (*p, bitnr);
+	}
+    }
+}