TYPE __ghdl_i32 IS SIGNED (32);

TYPE __ghdl_i64 IS SIGNED (64);

TYPE std__standard__integer__BT IS SIGNED (32);

EXTERNAL FUNCTION __ghdl_i64_exp (
  left: __ghdl_i64;
  right: std__standard__integer__BT)
  RETURN __ghdl_i64;

PUBLIC FUNCTION conv  (
  bw: std__standard__integer__BT)
  RETURN std__standard__integer__BT
DECLARE
BEGIN
  RETURN -std__standard__integer__BT'conv# (__ghdl_i64_exp (__ghdl_i64'conv# (
    std__standard__integer__BT'[2]), (bw -# 1)));
END;