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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library work;
use work.glibc_random_helpers.all;
package glibc_random is
function pseudorand(a: integer) return std_ulogic_vector;
function pseudorand1 return std_ulogic;
end package glibc_random;
package body glibc_random is
function pseudorand(a: integer) return std_ulogic_vector is
variable tmp1, tmp2, tmp3, tmp4: std_ulogic_vector(31 downto 0);
variable ret: std_ulogic_vector(63 downto 0);
tmp1 := std_ulogic_vector(to_unsigned(random, 32));
tmp2 := std_ulogic_vector(to_unsigned(random, 32));
if a <= 32 then
ret := tmp1 & tmp2;
tmp3 := std_ulogic_vector(to_unsigned(random, 32));
tmp4 := std_ulogic_vector(to_unsigned(random, 32));
ret := tmp1(15 downto 0) & tmp2(15 downto 0) & tmp3(15 downto 0) & tmp4(15 downto 0);
end if;
return ret((a-1) downto 0);
function pseudorand1 return std_ulogic is
variable tmp: std_ulogic_vector(31 downto 0);
tmp := std_ulogic_vector(to_unsigned(random, 32));
return tmp(0);
end package body glibc_random;