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authorClifford Wolf <clifford@clifford.at>2014-06-14 13:36:23 +0200
committerClifford Wolf <clifford@clifford.at>2014-06-14 13:36:23 +0200
commitf3b4a9dd2466d243fdb1b4ebf8c5e1e0d05d21af (patch)
tree272546d4c5ab6869bf502ee33fa9f68e90f8dde0 /tests/simple
parent406f86a91ec0ed024037e27d1cbf2a1bc73777d9 (diff)
Added support for math functions
Diffstat (limited to 'tests/simple')
-rw-r--r--tests/simple/realexpr.v57
1 files changed, 57 insertions, 0 deletions
diff --git a/tests/simple/realexpr.v b/tests/simple/realexpr.v
index 47f81214..2b63ca6f 100644
--- a/tests/simple/realexpr.v
+++ b/tests/simple/realexpr.v
@@ -1,3 +1,4 @@
+
module demo_001(y1, y2, y3, y4);
output [7:0] y1, y2, y3, y4;
@@ -11,3 +12,59 @@ module demo_001(y1, y2, y3, y4);
assign y3 = p3 + 0.2;
assign y4 = p4 + 0.2;
endmodule
+
+module demo_002(s, a, y);
+ input [4:0] s;
+ input [3:0] a;
+ output [7:0] y;
+
+ reg [7:0] data [21*16-1:0];
+ integer i;
+
+ initial begin
+ for (i = 0; i < 16; i = i+1) begin
+ data[ 0*16 + i] = 128 + 64 * $ln (i*0.2 - 0.8);
+ data[ 1*16 + i] = 128 + 64 * $log10 (i*0.2 - 0.8);
+ data[ 2*16 + i] = 128 + 64 * $exp (i*0.2 - 0.8);
+ data[ 3*16 + i] = 128 + 64 * $sqrt (i*0.2 - 0.8);
+ data[ 4*16 + i] = 128 + 64 * $floor (i*0.2 - 0.8);
+ data[ 5*16 + i] = 128 + 64 * $ceil (i*0.2 - 0.8);
+ data[ 6*16 + i] = 128 + 64 * $sin (i*0.2 - 0.8);
+ data[ 7*16 + i] = 128 + 64 * $cos (i*0.2 - 0.8);
+ data[ 8*16 + i] = 128 + 64 * $tan (i*0.2 - 0.8);
+ data[ 9*16 + i] = 128 + 64 * $asin (i*0.2 - 0.8);
+ data[10*16 + i] = 128 + 64 * $acos (i*0.2 - 0.8);
+ data[11*16 + i] = 128 + 64 * $atan (i*0.2 - 0.8);
+ data[12*16 + i] = 128 + 64 * $sinh (i*0.2 - 0.8);
+ data[13*16 + i] = 128 + 64 * $cosh (i*0.2 - 0.8);
+ data[14*16 + i] = 128 + 64 * $tanh (i*0.2 - 0.8);
+ data[15*16 + i] = 128 + 64 * $asinh (i*0.2 - 0.8);
+ data[16*16 + i] = 128 + 64 * $acosh (i*0.2 - 0.8);
+ data[17*16 + i] = 128 + 64 * $atanh (i*0.2 - 0.8);
+ end
+ end
+
+ assign y = s < 18 ? data[s*16 + a] : 0;
+endmodule
+
+module demo_003(s, a, b, y);
+ input [1:0] s;
+ input [3:0] a;
+ input [3:0] b;
+ output [7:0] y;
+
+ reg [7:0] data [3*16*16-1:0];
+ integer i, j;
+
+ initial begin
+ for (i = 0; i < 16; i = i+1)
+ for (j = 0; j < 16; j = j+1) begin
+ data[0*256 + i*16 + j] = 128 + 64 * $pow (i*0.2 - 0.8, j*0.2 - 0.8);
+ data[1*256 + i*16 + j] = 128 + 64 * $atan2 (i*0.2 - 0.8, j*0.2 - 0.8);
+ data[2*256 + i*16 + j] = 128 + 64 * $hypot (i*0.2 - 0.8, j*0.2 - 0.8);
+ end
+ end
+
+ assign y = s < 3 ? data[s*256 + a*16 + b] : 0;
+endmodule
+