From 7f7425f11ee1365bee56b3f50f7effb9220fd3d7 Mon Sep 17 00:00:00 2001
From: Tony DiCola <tony@tonydicola.com>
Date: Fri, 25 Jul 2014 19:34:35 -0700
Subject: [PATCH] Resolve #24 by adding convert F to C function.

---
 DHT.cpp | 4 ++++
 DHT.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/DHT.cpp b/DHT.cpp
index fe55016..2ef244c 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -53,6 +53,10 @@ float DHT::convertCtoF(float c) {
 	return c * 9 / 5 + 32;
 }
 
+float DHT::convertFtoC(float f) {
+  return (f - 32) * 5 / 9; 
+}
+
 float DHT::readHumidity(void) {
   float f;
   if (read()) {
diff --git a/DHT.h b/DHT.h
index 8f40a02..5280f9c 100644
--- a/DHT.h
+++ b/DHT.h
@@ -32,6 +32,7 @@ class DHT {
   void begin(void);
   float readTemperature(bool S=false);
   float convertCtoF(float);
+  float convertFtoC(float);
   float computeHeatIndex(float tempFahrenheit, float percentHumidity);
   float readHumidity(void);
   boolean read(void);