From: Clifford E. Cummings (cliffc@europa.com)
Date: Fri May 02 1997 - 09:06:30 PDT
Subject: BTF - B23 - Constant functions
Behavioral Task Force - Enhancement Request
Assigned Enhancement Request Number: B23
Enhancement Name (Description): Constant functions
Date Submitted: 970418
Requestor: kurt@wsfdb.com (Kurt Baty)
Status: RO
Is enhancement intended to be synthesizable?:
===== Notes from meeting held at IVC 3/31/97-4/2/97 =====
Constant functions - Kurt Baty lead the discussion
Would be very valuable/useful to IP and code re-use
Objection - requires interpreter in the compile phase
Action item: Kurt to send potential examples
//-----------------------------------------------------------------
// Generate Example:
//-----------------------------------------------------------------
module #(width, depth) example_fifo (dout, full, empty, din,
clk, reset, push, pop);
parameter width = 16, depth = 16;
parameter counter_width = clogb2(depth);
//-----------------------------------------------------------------
// clogb2 is supposed to be a constant function that calculates the
// ceiling of the log-base 2 of the argument.
// The above parameter definition requires a constant function.
// This would require another enhancement to the LRM
//-----------------------------------------------------------------
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