Rearrange the file tree.

[u/mdw/catacomb] / factorial.c

diff --git a/factorial.c b/factorial.c
deleted file mode 100644 (file)
index 31316a7..0000000
--- a/factorial.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* -*-c-*-
- *
- * $Id: factorial.c,v 1.4 2004/04/08 01:36:15 mdw Exp $
- *
- * Example factorial computation
- *
- * (c) 2000 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.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include "config.h"
-
-#include <ctype.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <mLib/mdwopt.h>
-#include <mLib/quis.h>
-#include <mLib/report.h>
-
-#include "mpint.h"
-#include "mpmul.h"
-#include "mptext.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-static void usage(FILE *fp)
-{
-  pquis(fp, "Usage: $ [-r RADIX] INTEGER\n");
-}
-
-static void version(FILE *fp)
-{
-  pquis(fp, "$, Catacomb version " VERSION "\n");
-}
-
-static void help(FILE *fp)
-{
-  version(fp);
-  putc('\n', fp);
-  usage(fp);
-  fputs("\n\
-Prints the factorial of the given integer on its output.  Input may be\n\
-in decimal (the default), octal with preceding zero, hex with preceding\n\
-`0x', or any base N between 2 and 62 inclusive with preceding `N_'.\n\
-Output may be in any base between 2 and 62; the default is base 10.  For\n\
-bases between 11 and 36 inclusive, lowercase letters of either case are\n\
-used as additional digits with values 10 upwards; lowercase is always\n\
-used for output.  For bases between 37 and 62 inclusive, lowercase letters\n\
-have lower value than uppercase; hence `a' has the value 10, while `A' has\n\
-the value 36.\n\
-\n\
-Options provided:\n\
-\n\
--h, --help             Display this help message.\n\
--v, --version          Display the version number.\n\
--u, --usage            Display a usage message.\n\
-\n\
--r, --radix=N          Write output in base N.\n\
-", fp);
-}
-
-int main(int argc, char *argv[])
-{
-  unsigned long x;
-  int r = 10;
-  char *p;
-  mp *f, *ulmax, *xx;
-  unsigned fl = 0;
-
-#define f_bogus 1u
-
-  ego(argv[0]);
-
-  for (;;) {
-    static const struct option opt[] = {
-      { "help",                0,              0,      'h' },
-      { "version",     0,              0,      'v' },
-      { "usage",       0,              0,      'u' },
-      { "radix",       OPTF_ARGREQ,    0,      'r' },
-      { 0,             0,              0,      0 }
-    };
-    int i = mdwopt(argc, argv, "hvur:", opt, 0, 0, 0);
-    if (i < 0)
-      break;
-    switch (i) {
-      case 'h':
-       help(stdout);
-       exit(0);
-      case 'v':
-       version(stdout);
-       exit(0);
-      case 'u':
-       usage(stdout);
-       exit(0);
-      case 'r':
-       r = atoi(optarg);
-       if (r < 2 || r > 62)
-         die(EXIT_FAILURE, "bad radix `%s'", optarg);
-       break;
-      default:
-       fl |= f_bogus;
-       break;
-    }
-  }
-
-  if (optind + 1 != argc || (fl & f_bogus)) {
-    usage(stderr);
-    exit(EXIT_FAILURE);
-  }
-  ulmax = mp_fromulong(MP_NEW, ULONG_MAX);
-  p = argv[optind];
-  while (isspace((unsigned char)*p))
-    p++;
-  xx = mp_readstring(MP_NEW, argv[optind], &p, 0);
-  while (isspace((unsigned char)*p))
-    p++;
-  if (!xx || *p || MP_CMP(xx, >, ulmax))
-    die(EXIT_FAILURE, "bad integer `%s'", argv[optind]);
-  x = mp_toulong(xx);
-  mp_drop(xx);
-  mp_drop(ulmax);
-  f = mp_factorial(x);
-  mp_writefile(f, stdout, r);
-  fputc('\n', stdout);
-  mp_drop(f);
-  return (0);
-}
-
-/*----- That's all, folks -------------------------------------------------*/