From 9ecb54925bbbc218c183c0ee9cb3b27bf79e6e80 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Thu, 7 Mar 2024 16:30:11 -0600
Subject: platform/wavelet3d: implement unified fp-integer lane

---
 platform/wavelet3d/gfx_pkg.sv | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'platform/wavelet3d/gfx_pkg.sv')

diff --git a/platform/wavelet3d/gfx_pkg.sv b/platform/wavelet3d/gfx_pkg.sv
index e108d7d..cfab6a5 100644
--- a/platform/wavelet3d/gfx_pkg.sv
+++ b/platform/wavelet3d/gfx_pkg.sv
@@ -1,9 +1,10 @@
 package gfx;
 
-	typedef logic[31:0] float_word;
+	typedef logic[31:0] word;
+	typedef logic[63:0] dword;
 	typedef logic[7:0]  float_exp;
 
-	typedef logic[$bits(float_word) - $bits(float_exp) - 2:0] float_mant;
+	typedef logic[$bits(word) - $bits(float_exp) - 2:0] float_mant;
 	typedef logic[$bits(float_mant):0] float_mant_full; // Incluye '1.' explícito
 
 	localparam float_exp FLOAT_EXP_BIAS = (1 << ($bits(float_exp) - 1)) - 1;
@@ -40,14 +41,29 @@ package gfx;
 
 	typedef struct packed
 	{
-		float val;
 		logic exp_max,
 		      exp_min,
 		      mant_zero;
-	} float_special;
+	} float_class;
+
+	function float_class classify_float(float in);
+		classify_float.exp_max = &in.exp;
+		classify_float.exp_min = ~|in.exp;
+		classify_float.mant_zero = ~|in.mant;
+	endfunction
+
+	function logic is_float_special(float_class in);
+		is_float_special = in.exp_max | (in.exp_min & ~in.mant_zero);
+	endfunction
 
 	/* -> 4,4,4,4,4,4,4,4 -> 8,8,8,8 -> 16,16 -> 32
 	 */
 	localparam FADD_CLZ_STAGES = 4;
 
+	typedef struct packed
+	{
+		logic fadd,
+		      fmul;
+	} arith_op;
+
 endpackage
-- 
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