i m working on a vhdl project which requires the use of floating point numbers ? please let me knew if there is any available source code for the same?
Up to now real numbers aren't synthesizable "automatically". You cannot write:
signal r, a, b, c, x, y, z : real; c <= a-b+3.3; z <= x+y; r <= c*z;
Instead you must implement the datapath by using IP-Cores or coding by yourself. But: WHAT is your actual problem? WHY do you need floats?
Do you realy nead "floating point" or does fixpoint fits to your project? So you could consider your integer variables as fixpoint values e.g. a 8bit integer as a fixpoint with 4 integer and 4 fractional digits: deciaml binary 0.06125 0000_0001 0.125 0000_0010 0.5 0000_1000 1.0 0001_0000 3.75 0011_1100
i am working on implementation of neural networks on FPGA. which requires addition and multiplication of real numbers. i am and Electronics and communication student. i dont know what is IP core. My professors have told me that i should define the package for using real numbers.
... do you know what is a real number ? look for IEEE754 for example ... what range/precision do you need ? how big/small accurate should they be ? (maybe fixed point is the way to go). look at opencores.org, there are some fpu implementations there...
I think in case of an FPGA-implementation of a neural network (mlp?) you will have a big amount of parallel mult operations, which means a lot of ressource-requirement especially in case of float values. First you should check if you really need fp-precision.