From b5cc7593728fd7f39446dda95e5705ea593e188b Mon Sep 17 00:00:00 2001
From: Jeffrey A Law <law@cygnus.com>
Date: Thu, 2 Sep 1999 23:55:52 +0000
Subject: [PATCH] powerset.h (SET_WORD, [...]): Do not redefine based on
 USE_CHAR.

        * powerset.h (SET_WORD, SET_SHORT, SET_CHAR): Do not redefine based
        on USE_CHAR.
        (USE_CHAR): No longer define.
        * eqps.c ffsetclrps.c flsetclrps.c: Remove !USE_CHARS support.

From-SVN: r29069
---
 libchill/ChangeLog    |  7 +++++++
 libchill/eqps.c       | 21 ---------------------
 libchill/ffsetclrps.c | 17 -----------------
 libchill/flsetclrps.c | 17 -----------------
 libchill/powerset.h   | 16 ++++------------
 5 files changed, 11 insertions(+), 67 deletions(-)

diff --git a/libchill/ChangeLog b/libchill/ChangeLog
index d01f4efa77d..4704da9a7c2 100644
--- a/libchill/ChangeLog
+++ b/libchill/ChangeLog
@@ -1,3 +1,10 @@
+Thu Sep  2 17:50:47 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* powerset.h (SET_WORD, SET_SHORT, SET_CHAR): Do not redefine based
+	on USE_CHAR.
+	(USE_CHAR): No longer define.
+	* eqps.c ffsetclrps.c flsetclrps.c: Remove !USE_CHARS support.
+
 Mon Aug 30 16:42:45 1999  Hans-Peter Nilsson  <hp@axis.se>
 
 	* Makefile.in (chillrt0.o): Depend on chillrt0.c explicitly.
diff --git a/libchill/eqps.c b/libchill/eqps.c
index 97e4269e940..e0e00db3cc2 100644
--- a/libchill/eqps.c
+++ b/libchill/eqps.c
@@ -55,27 +55,6 @@ __eqpowerset (left, right, bitlength)
      SET_WORD *right;
      unsigned long bitlength;
 {
-#ifndef USE_CHARS
-  if (bitlength <= SET_CHAR_SIZE)
-    {
-      SET_CHAR c = *(SET_CHAR *)left ^ *(SET_CHAR *)right;
-      MASK_UNUSED_CHAR_BITS (&c, bitlength);
-      return (c == 0) ? 1 : 0;
-    }
-  else if (bitlength <= SET_SHORT_SIZE)
-    {
-      SET_SHORT c = *(SET_SHORT *)left ^ *(SET_SHORT *)right;
-      MASK_UNUSED_SHORT_BITS (&c, bitlength);
-      return (c == 0) ? 1 : 0;
-    }
-  else if (bitlength <= SET_WORD_SIZE)
-    {
-      SET_WORD c = *(SET_WORD *)left ^ *(SET_WORD *)right;
-      MASK_UNUSED_WORD_BITS (&c, bitlength % SET_WORD_SIZE);
-      return (c == 0) ? 1 : 0;
-    }
-  else
-#endif
     {
       SET_WORD c;
       register unsigned long i;
diff --git a/libchill/ffsetclrps.c b/libchill/ffsetclrps.c
index 9498f4e0048..a5c202c7b93 100644
--- a/libchill/ffsetclrps.c
+++ b/libchill/ffsetclrps.c
@@ -56,23 +56,6 @@ __ffsetclrpowerset (ps, bitlength, first_bit)
   if (first_bit >= bitlength)
     return -1;
 
-#ifndef USE_CHARS
-  if (bitlength <= SET_CHAR_SIZE)
-    {
-      for (bitno = first_bit; bitno < bitlength; bitno++)
-	if (GET_BIT_IN_CHAR (*((SET_CHAR *)ps), bitno))
-	  break;
-      return bitno == bitlength ? -1 : bitno;
-    }
-  else if (bitlength <= SET_SHORT_SIZE)
-    {
-      for (bitno = first_bit; bitno < bitlength; bitno++)
-	if (GET_BIT_IN_SHORT (*((SET_SHORT *)ps), bitno))
-	  break;
-      return bitno == bitlength ? -1 : bitno;
-    }
-  else
-#endif
     {
       unsigned int words_to_skip = (unsigned) first_bit / SET_WORD_SIZE;
       unsigned long cnt = words_to_skip * SET_WORD_SIZE;
diff --git a/libchill/flsetclrps.c b/libchill/flsetclrps.c
index 44e97173191..fe86c0c9abf 100644
--- a/libchill/flsetclrps.c
+++ b/libchill/flsetclrps.c
@@ -57,23 +57,6 @@ __flsetclrpowerset (ps, bitlength, first_bit)
 {
   register int bitno;
 
-#ifndef USE_CHARS
-  if (bitlength <= SET_CHAR_SIZE)
-    {
-      for (bitno = bitlength - 1; bitno >= first_bit; bitno--)
-	if (GET_BIT_IN_CHAR (*((SET_CHAR *)ps), bitno))
-	  break;
-      return bitno < first_bit ? -1 : bitno;
-    }
-  else if (bitlength <= SET_SHORT_SIZE)
-    {
-      for (bitno = bitlength - 1; bitno >= first_bit; bitno--)
-	if (GET_BIT_IN_SHORT (*((SET_SHORT *)ps), bitno))
-	  break;
-      return bitno < first_bit ? -1 : bitno;
-    }
-  else
-#endif
     {
       SET_WORD *p, c;
       bitno = bitlength - 1;
diff --git a/libchill/powerset.h b/libchill/powerset.h
index ea27cddc389..e40303a2eeb 100644
--- a/libchill/powerset.h
+++ b/libchill/powerset.h
@@ -29,23 +29,15 @@ Boston, MA 02111-1307, USA.  */
 #ifndef _POWERSET_H
 #define _POWERSET_H
 
-#define USE_CHARS
-
-#ifdef USE_CHARS
+/* Do not set these to anything other than character types without fixing
+   their uses in andps.c and other files which implement bit sets operations.
 
+   The uses in those files will violate ANSI/ISO C aliasing rules as they
+   are currently written.  */
 #define SET_WORD unsigned char
 #define SET_CHAR  unsigned char
 #define SET_SHORT unsigned char
 
-#else
-
-#ifndef SET_WORD
-#define SET_WORD unsigned int
-#endif
-#define SET_CHAR  unsigned char
-#define SET_SHORT unsigned short
-#endif
-
 #define SET_WORD_SIZE (sizeof (char) * sizeof (SET_WORD))
 #define SET_SHORT_SIZE (sizeof (char) * sizeof (SET_SHORT))
 #define SET_CHAR_SIZE sizeof (char)