Move to shell/ in preparation for merge into new dotfiles repository

[config/dotfiles.git] / shell / bin / calc

diff --git a/shell/bin/calc b/shell/bin/calc
new file mode 100755 (executable)
index 0000000..ea3cbd3
--- /dev/null
+++ b/shell/bin/calc
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# Copyright (C) 2011-2014  Simon Ruderich
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+set -eu
+
+exec python -i -c '
+
+# Math functions.
+from math import *
+
+def ld(x):
+    return log(x)/log(2)
+def lg(x):
+    return log10(x)
+
+def binom(n,k):
+    return reduce(lambda a,b: a*(n-b)/(b+1),xrange(k),1)
+
+# Convert number to scientific notation (e.g. 5e6).
+def s(x):
+    print "%e" % x
+
+
+# Time/Date functions.
+import time
+
+# Convert time in seconds since epoch to readable string.
+def stime(seconds):
+    print time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(seconds))
+
+
+print "Welcome to the ultimate calculator."'
+
+# vim: ft=python