fpu: Make inverse_table a constant

GHDL synthesis is complaining that inverse_table is never stored to. Change it to a constant. Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
4 years ago · 50b4cb9423
parent f01f3d233a
commit 50b4cb9423
1 changed files with 1 additions and 1 deletions
--- a/fpu.vhdl
+++ b/fpu.vhdl
@ -197,7 +197,7 @@ architecture behaviour of fpu is
    -- Each output value is the inverse of the center of the input
    -- range for the value, i.e. entry 0 is 1 / (1 + 1/512),
    -- entry 1 is 1 / (1 + 3/512), etc.
-    signal inverse_table : lookup_table := (
+    constant inverse_table : lookup_table := (
        -- 1/x lookup table
        -- Unit bit is assumed to be 1, so input range is [1, 2)
        18x"3fc01", 18x"3f411", 18x"3ec31", 18x"3e460", 18x"3dc9f", 18x"3d4ec", 18x"3cd49", 18x"3c5b5",