From e07f7f148246864ee78507186893ae72cb0afc93 Mon Sep 17 00:00:00 2001
From: Alexander Stoll <astoll@netways.de>
Date: Fri, 7 Feb 2020 15:07:29 +0100
Subject: [PATCH] Add first draft unit determination tools

---
 lib/core/tools/Get-UnitPrefixIEC.psm1 | 21 +++++++++++++++++++++
 lib/core/tools/Get-UnitPrefixSI.psm1  | 20 ++++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 lib/core/tools/Get-UnitPrefixIEC.psm1
 create mode 100644 lib/core/tools/Get-UnitPrefixSI.psm1

diff --git a/lib/core/tools/Get-UnitPrefixIEC.psm1 b/lib/core/tools/Get-UnitPrefixIEC.psm1
new file mode 100644
index 0000000..a637e5f
--- /dev/null
+++ b/lib/core/tools/Get-UnitPrefixIEC.psm1
@@ -0,0 +1,21 @@
+function Get-UnitPrefixIEC()
+{
+    param(
+       [single]$Value
+    );
+
+    If ( $Value / [math]::Pow(2, 50) -ge 1 ) {
+        return 'PiB'
+    } elseif ( $Value / [math]::Pow(2, 40) -ge 1 ) {
+        return 'TiB'
+    } elseif ( $Value / [math]::Pow(2, 30) -ge 1 ) {
+        return 'GiB'
+    } elseif ( $Value / [math]::Pow(2, 20) -ge 1 ) {
+        return 'MiB'
+    } elseif ( $Value / [math]::Pow(2, 10) -ge 1 ) {
+        return 'KiB'
+    } else {
+        return 'B'
+    }
+}
+
diff --git a/lib/core/tools/Get-UnitPrefixSI.psm1 b/lib/core/tools/Get-UnitPrefixSI.psm1
new file mode 100644
index 0000000..a10609c
--- /dev/null
+++ b/lib/core/tools/Get-UnitPrefixSI.psm1
@@ -0,0 +1,20 @@
+function Get-UnitPrefixSI()
+{
+    param(
+       [single]$Value
+    );
+
+    If ( $Value / [math]::Pow(10, 15) -ge 1 ) {
+        return 'PB'
+    } elseif ( $Value / [math]::Pow(10, 12) -ge 1 ) {
+        return 'TB'
+    } elseif ( $Value / [math]::Pow(10, 9) -ge 1 ) {
+        return 'GB'
+    } elseif ( $Value / [math]::Pow(10, 6) -ge 1 ) {
+        return 'MB'
+    } elseif ( $Value / [math]::Pow(10, 3) -ge 1 ) {
+        return 'KB'
+    } else {
+        return 'B'
+    }
+}