ObjectPascal FahrenheitToCelsius Function Convert a fahrenheit temperature into celsius StdConvs unit

function FahrenheitToCelsius ( const FahrenheitValue : Double ) : Double;

Description The FahrenheitToCelsius function converts a FahrenheitValue to celsius. Related commands CelsiusToFahrenheit Convert a celsius temperature into fahrenheit Convert Convert one measurement value to another		Example code : Convert body temperature in fahrenheit to celsius var   celsius, fahrenheit : Double; begin   // Define the fahrenheit value   fahrenheit := 98.4;  // Human body temperature   // Convert to celsius   celsius := FahrenheitToCelsius(fahrenheit);   // Show both values   ShowMessageFmt('%f F  = %f C',[fahrenheit, celsius]); end; Show full unit code    98.40 F = 36.89 C