Release calc version 2.11.5t1.1

cscript/fproduct.calc

@@ -0,0 +1,88 @@
+#!/usr/local/bin/calc -q -s -f
+/*
+ * fproduct - write the big Endian product of terms to a file
+ *
+ * usage:
+ *	fproduct filename term [term ...]
+ *
+ *	filename	where to write the product, use - for stdout
+ *	term ...	terms to multiply
+ *
+ * Copyright (C) 2001  Landon Curt Noll
+ *
+ * Calc is open software; you can redistribute it and/or modify it under
+ * the terms of the version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * Calc 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 Lesser General
+ * Public License for more details.
+ *
+ * A copy of version 2.1 of the GNU Lesser General Public License is
+ * distributed with calc under the filename COPYING-LGPL.  You should have
+ * received a copy with calc; if not, write to Free Software Foundation, Inc.
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * @(#) $Revision: 29.1 $
+ * @(#) $Id: fproduct.calc,v 29.1 2001/04/08 08:25:15 chongo Exp $
+ * @(#) $Source: /usr/local/src/cmd/calc/cscript/RCS/fproduct.calc,v $
+ *
+ * Under source code control:   2001/04/07 20:13:11
+ * File existed as early as:    2001
+ *
+ * chongo <was here> /\oo/\     http://www.isthe.com/chongo/
+ * Share and enjoy!  :-)        http://www.isthe.com/chongo/tech/comp/calc/
+ */
+
+/*
+ * parse args
+ */
+argc = argv();
+if (argc < 2) {
+    fprintf(files(2), "usage: %s term [term ...]\n", argv(0));
+    exit;
+}
+filename = argv(1);
+
+
+/*
+ * build the product
+ */
+product = 1;
+for (i=2; i < argc; ++i) {
+    product *= eval(argv(i));
+}
+product = abs(product);
+
+
+/*
+ * open the file for writing, "-" is stdout
+ */
+if (filename == "-") {
+    fd = files(1);
+} else {
+    fd = fopen(filename, "w");
+    if (!isfile(fd)) quit "be2file: cannot open file for writing";
+}
+
+
+/*
+ * write the octets to the file
+ *
+ * The most significant bits of the integer become the first file octets.
+ */
+if (product > 0) {
+    octlen = int((highbit(product)+8) / 8);
+    for (i=octlen-1; i >= 0; --i) {
+	fputc(fd, char(product >> (i*8)));
+    }
+}
+
+
+/*
+ * cleanup
+ */
+if (filename != "-") {
+    fclose(fd);
+}