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#!/usr/bin/env python');document.writeln('# oblogdefelix.blogspot.com');document.writeln('# see usage below');document.writeln('');document.writeln('import sys,string');document.writeln('from numpy import *');document.writeln('');document.writeln('list=sys.argv');document.writeln('if (size(list)>1):');document.writeln('   del list[0]');document.writeln('   expr=string.join(list,'')');document.writeln('   print expr,'='');document.writeln('   x=compile(expr,'','eval')');document.writeln('   print eval(x)');document.writeln('else:');document.writeln('   print 'Usage:'');document.writeln('   print ''');document.writeln('   print " calcfx 'expression'"');document.writeln('   print ''');document.writeln('   print 'Ex:'');document.writeln('   print " calcfx '3.*sin(pi/4.)'"');document.writeln('   print " calcfx 'roots(array([1. 0. -1.]))'"');document.writeln('   print ''');document.writeln('   print 'Note: always use decimal point or operations can be understood as integer operation:'');document.writeln('   print ' 1/2 and 1./2. are 0 and 0.5 respectively');document.writeln('
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