ch02.018_best

来自「Perl Best Practices the source code」· 018_BEST 代码 · 共 21 行

##############################################################################
##   Code fragment (Recommended) from Chapter 2 of "Perl Best Practices"    ##
##     Copyright (c) O'Reilly & Associates, 2005. All Rights Reserved.      ##
##  See: http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html  ##
##############################################################################


# Standard modules...
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;


my $spring_force = !$hyperextended ? -$spring_constant * $extension : 0;
 
my $payoff = max(0, -$asset_price_at_maturity + $strike_price);