fpu added

1 files changed, 47 insertions, 22 deletions

diff --git a/verilog/fpu/fpu_bench.v b/verilog/fpu/fpu_bench.v
index ecbd659..2c54c8c 100644
--- a/verilog/fpu/fpu_bench.v
+++ b/verilog/fpu/fpu_bench.v
@@ -4,6 +4,7 @@
 
 module fpu_bench;
 
+reg[63:0] float1, float2, float_out;
 reg[31:0] input1, input2;
 reg add = 1'b0;
 wire[31:0] fpu_output;
@@ -12,47 +13,71 @@ fpu_2 fpu0 (add,input1, input2, fpu_output);
 
 initial begin
 
-	input1=32'b01000000000111001100110011001101; // 2.45
-	input2=32'b00111111001001100110011001100110; //.65
+	input1=32'b01000011000111001100110011001101; // 2.45
+	input2=32'b00111001001001100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b01000000000111001100110011001101; // 2.45
-	input2=32'b10111111001001100110011001100110; //.65
+	input1=32'b01000100000111001110111011001101; // 2.45
+	input2=32'b10111111001000100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b11000000000111001100110011001101; // 2.45
+	input1=32'b11000110000111001100110110001101; // 2.45
 	input2=32'b00111111001001100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b11000000000111001100110011001101; // 2.45
-	input2=32'b10111111001001100110011001100110; //.65
+	input1=32'b10111111000111001100110011001101; // 2.45
+	input2=32'b11000011001001100110001001100110; //.65
 	#5;
-	$display("\nSum: %16b + %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f + %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
 	add = 1'b1;
 
-	input1=32'b01000000000111001100110011001101; // 2.45
-	input2=32'b00111111001001100110011001100110; //.65
+	input1=32'b01000011000111001100110011001101; // 2.45
+	input2=32'b00111001001001100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b01000000000111001100110011001101; // 2.45
-	input2=32'b10111111001001100110011001100110; //.65
+	input1=32'b01000100000111001110111011001101; // 2.45
+	input2=32'b10111111001000100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b11000000000111001100110011001101; // 2.45
+	input1=32'b11000110000111001100110110001101; // 2.45
 	input2=32'b00111111001001100110011001100110; //.65
 	#5;
-	$display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 
-	input1=32'b11000000000111001100110011001101; // 2.45
-	input2=32'b10111111001001100110011001100110; //.65
+	input1=32'b10111111000111001100110011001101; // 2.45
+	input2=32'b11000011001001100110001001100110; //.65
 	#5;
-	$display("\nSum: %16b - %16b = %16b",input1,input2,fpu_output);
+	float1={input1[31],input1[30],{3{~input1[30]}},input1[29:23],input1[22:0], {29{1'b0}}};
+	float2={input2[31],input2[30],{3{~input2[30]}},input2[29:23],input2[22:0], {29{1'b0}}};
+	float_out={fpu_output[31],fpu_output[30],{3{~fpu_output[30]}},fpu_output[29:23],fpu_output[22:0], {29{1'b0}}};
+	$display("\nSum: %f - %f = %f", $bitstoreal(float1),$bitstoreal(float2), $bitstoreal(float_out));
 	$finish;
 end
 endmodule