ln Testbench

The testbench calculates the natural log values for 1.3498588, 1.64872127, 2.22554092, 99.142, and 30000. The testbench outputs the following:

# Loading sv_std.std
# Loading work.tb_ln(fast)
# time=157 i_data=      88464( 1.3498588) o_ln=      19666(0.300079)
# time=215 i_data=     108051(1.64872127) o_ln=      32770(0.500031)
# time=275 i_data=     145853(2.22554092) o_ln=      52436(0.800110)
# time=345 i_data=    6497370(    99.142) o_ln=     301242(4.596588)
# time=431 i_data= 1966080000(     30000) o_ln=    675610(10.308990)
# ---PASSED---