Support Vector Machine VHDL

[Altera_Forum]

I would like to know if there someone has a VHDL code for Support Vector Machine.  

 I would also like to know if someone could explain to me this line of code   res: out sfixed(7 downto -10)    I know what is downto, but I have never seen it to a negative number before.  Does that mean this is sfixed is 17 bits? If so why not 16 downto 0  Thanks   I also attached an SVM code that I understand but having trouble some parts.  

[Altera_Forum]

Its actually 18 bits signed fixed point number, with 8 bits integer and 10 bits fractional. 

 The sfixed/ufixed types were added with VHDL 2008 (there is a 1993 compatability library). It allows you to represent fixed point numbers a bit more easily (and slightly less confusingly). Positive indexes are the integer part, and -ve are the fractional parts.  eg. res : sfixed(1 downto -2) := "0101";  = 1.25  "0011" = 0.75

[Altera_Forum]

--- Quote Start ---  I would like to know if there someone has a VHDL code for Support Vector Machine.   I would also like to know if someone could explain to me this line of code   res: out sfixed(7 downto -10)    I know what is downto, but I have never seen it to a negative number before.  Does that mean this is sfixed is 17 bits? If so why not 16 downto 0  Thanks   I also attached an SVM code that I understand but having trouble some parts.    --- Quote End ---    Please Sir, I need your help in making me understand this line  use ieee.fixed_pkg.all  when I ran the program, I found this problem  ERROR:HDLParsers:3014 - "C:/Users/George1/Desktop/fixed_top.vhd" Line 4. Library unit fixed_pkg is not available in library ieee.  I need the library please.   Thank you so much

[Altera_Forum]

--- Quote Start ---  I would like to know if there someone has a VHDL code for Support Vector Machine  --- Quote End ---    Doing a quick search o the Web, we can find some academic researches and even working implementations on VHDL, but I would be cautious in regard to find some really trustworthy code. The LibSVM is a well known and reliable library, but wrote in C, with which you could consider running under a softcore environment, although loosing some performance in terms of speed if compared to a hardware-based implementation.

[Altera_Forum]

--- Quote Start ---  Please Sir, I need your help in making me understand this line  use ieee.fixed_pkg.all  when I ran the program, I found this problem  ERROR:HDLParsers:3014 - "C:/Users/George1/Desktop/fixed_top.vhd" Line 4. Library unit fixed_pkg is not available in library ieee.  I need the library please.   Thank you so much  --- Quote End ---    How are you trying to compile the code? the fixed_pkg is part of the VHDL 2008 standard and is included with modelsim. For Quartus prime 15.1 and later, the package is included. For earlier versions, you need to find a version of the library from somewhere.

[Altera_Forum]

>For Quartus prime 15.1 and later, the package is included. 

 only PRO edition (aka ARRIA 10)

[Altera_Forum]

--- Quote Start ---  How are you trying to compile the code? the fixed_pkg is part of the VHDL 2008 standard and is included with modelsim. For Quartus prime 15.1 and later, the package is included. For earlier versions, you need to find a version of the library from somewhere.  --- Quote End ---    I am compiling the code with Xilinx ISE. You are right when I compile it with Modelsim, it runs with no error. How can I compile with Xilinx

[Altera_Forum]

You'll need to get hold of the Xilinx version of the fixed_pkg that is '93 compatible.  

And you'll get more help on the Xilinx forum (this is a altera forum, Xilinx competitor.)