BSD 4_4 release

[unix-history] / usr / src / games / factor / factor.c

diff --git a/usr/src/games/factor/factor.c b/usr/src/games/factor/factor.c
index 2dd1832..9eaea50 100644 (file)
--- a/usr/src/games/factor/factor.c
+++ b/usr/src/games/factor/factor.c
@@ -1,31 +1,47 @@
 /*
 /*

- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.

  *
  * This code is derived from software contributed to Berkeley by
  * Landon Curt Noll.
  *
  *
  * This code is derived from software contributed to Berkeley by
  * Landon Curt Noll.
  *

- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.

  */
 
 #ifndef lint
  */
 
 #ifndef lint

-char copyright[] =
-"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n";
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+       The Regents of the University of California.  All rights reserved.\n";

 #endif /* not lint */
 
 #ifndef lint
 #endif /* not lint */
 
 #ifndef lint

-static char sccsid[] = "@(#)factor.c   4.2 (Berkeley) %G%";
+static char sccsid[] = "@(#)factor.c   8.1 (Berkeley) 5/31/93";

 #endif /* not lint */
 
 /*
 #endif /* not lint */
 
 /*


@@ -38,17 +54,18 @@ static char sccsid[] = "@(#)factor.c        4.2 (Berkeley) %G%";
  * usage:
  *     factor [number] ...
  *
  * usage:
  *     factor [number] ...
  *

- * With no args, reads numbers from stdin and factors them.
- * With 1 or more args, factors such args.  Factors are printed
- * in assending order, with a leading tab, one per line.
+ * The form of the output is:
+ *
+ *     number: factor1 factor1 factor2 factor3 factor3 factor3 ...
+ *
+ * where factor1 < factor2 < factor3 < ...

  *
  *

- * When more than one arg is supplied, the argument value, left
- * justified is printed before the set of factors.  This is not
- * one for reading values from input for historical reasons.
+ * If no args are given, the list of numbers are read from stdin.

  */
 
  */
 

-#include <stdio.h>

 #include <ctype.h>
 #include <ctype.h>

+#include <limits.h>
+#include <stdio.h>

 #include "primes.h"
 
 /*
 #include "primes.h"
 
 /*


@@ -275,10 +292,11 @@ pr_fact(val)
 
        /* firewall - catch 0 and 1 */
        switch (val) {
 
        /* firewall - catch 0 and 1 */
        switch (val) {

-       case -2147483648:
-               /* avoid negation problems */
-               puts("-2147483648: -1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2\n");
-               return;
+       case LONG_MIN:
+               /* avoid negation problems - assumes LONG_MIN is even  XXX */
+               printf("%ld: -1 2", val);
+               val /= -2;
+               break;

        case -1:
                puts("-1: -1\n");
                return;
        case -1:
                puts("-1: -1\n");
                return;


@@ -291,12 +309,11 @@ pr_fact(val)
                if (val < 0) {
                        val = -val;
                        printf("%ld: -1", val);
                if (val < 0) {
                        val = -val;
                        printf("%ld: -1", val);

-               } else {
+               } else

                        printf("%ld:", val);
                        printf("%ld:", val);

-               }
-               fflush(stdout);

                break;
        }
                break;
        }

+       fflush(stdout);

 
        /*
         * factor value
 
        /*
         * factor value