From ff2eb9d216c820d3549a95a6f3ecb5edc0cdcd47 Mon Sep 17 00:00:00 2001
From: Steven Wilson <steven1170@zoho.eu>
Date: Mon, 12 Aug 2019 16:28:34 +0100
Subject: add solution for week 21 task 1

---
 challenge-021/steven-wilson/perl5/ch-01.pl | 32 ++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 challenge-021/steven-wilson/perl5/ch-01.pl

diff --git a/challenge-021/steven-wilson/perl5/ch-01.pl b/challenge-021/steven-wilson/perl5/ch-01.pl
new file mode 100644
index 0000000000..a985076177
--- /dev/null
+++ b/challenge-021/steven-wilson/perl5/ch-01.pl
@@ -0,0 +1,32 @@
+#!/usr/bin/env perl
+# Author: Steven Wilson
+# Date: 2019-08-12
+# Week: 021
+#
+# Task #1
+#
+# Write a script to calculate the value of e, also known as Euler’s
+# number and Napier’s constant. Please checkout wiki page for more
+# information.
+# https://en.wikipedia.org/wiki/E_(mathematical_constant)
+
+use strict;
+use warnings;
+use feature qw/ say /;
+use Math::BigFloat;
+
+my $number     = 0;
+my $factorial  = 1;
+my $e          = Math::BigFloat->new( 1 / $factorial );
+my $previous_e = 0;
+
+while ( $e != $previous_e ) {
+    #    say $e;
+    $number++;
+    $factorial *= $number;
+    $previous_e = $e->copy();
+    $e += ( 1 / $factorial );
+}
+
+my $dp = 50;
+say "value of e to $dp decimal places: ", $e->fround($dp);
-- 
cgit