rtl/fpu: initial commit

Imported from https://github.com/taneroksuz/fpu-sp

1 files changed, 21 insertions, 0 deletions

diff --git a/rtl/fpu/float/fp_mac.sv b/rtl/fpu/float/fp_mac.sv
new file mode 100644
index 0000000..a471e36
--- /dev/null
+++ b/rtl/fpu/float/fp_mac.sv
@@ -0,0 +1,21 @@
+import fp_wire::*;
+
+module fp_mac (
+    input reset,
+    input clock,
+    input fp_mac_in_type fp_mac_i,
+    output fp_mac_out_type fp_mac_o
+);
+
+  logic [109:0] add;
+  logic [111:0] mul;
+  logic [109:0] mac;
+  logic [109:0] res;
+
+  assign add = {fp_mac_i.a, 54'h0};
+  assign mul = $signed(fp_mac_i.b) * $signed(fp_mac_i.c);
+  assign mac = (fp_mac_i.op == 0) ? mul[109:0] : -mul[109:0];
+  assign res = add + mac;
+  assign fp_mac_o.d = res;
+
+endmodule