Switching between float and double precision at compile time

Question

Where should I look at if I want to switch between float and double precision at compile time. Its like, if user wants everything in float instead of double precision how I

Answer 1

Without knowing exactly how you intent to use the data, it's hard to recommend the correct solution.

Have a look at the union date type.

http://msdn.microsoft.com/en-us/library/5dxy4b7b(v=VS.80).aspx

Templates would also be a viable option depending on the usage.

http://msdn.microsoft.com/en-us/library/y097fkab.aspx