src/ieee754/fpdiv/test/test_div.py

   1 import sys
   2 from random import randint
   3 from random import seed
   4 from operator import truediv
   5
   6 from nmigen import Module, Signal
   7 from nmigen.compat.sim import run_simulation
   8
   9 from nmigen_div_experiment import FPDIV
  10
  11 from unit_test_single import (get_mantissa, get_exponent, get_sign, is_nan,
  12                                 is_inf, is_pos_inf, is_neg_inf,
  13                                 match, get_case, check_case, run_test,
  14                                 run_edge_cases, run_corner_cases)
  15
  16
  17 def testbench(dut):
  18     yield from check_case(dut, 0x80000000, 0x00000000, 0xffc00000)
  19     yield from check_case(dut, 0x00000000, 0x80000000, 0xffc00000)
  20     yield from check_case(dut, 0x0002b017, 0xff3807ab, 0x80000000)
  21     yield from check_case(dut, 0x40000000, 0x3F800000, 0x40000000)
  22     yield from check_case(dut, 0x3F800000, 0x40000000, 0x3F000000)
  23     yield from check_case(dut, 0x3F800000, 0x40400000, 0x3EAAAAAB)
  24     yield from check_case(dut, 0x40400000, 0x41F80000, 0x3DC6318C)
  25     yield from check_case(dut, 0x41F9EB4D, 0x429A4C70, 0x3ECF52B2)
  26     yield from check_case(dut, 0x7F7FFFFE, 0x70033181, 0x4EF9C4C8)
  27     yield from check_case(dut, 0x7F7FFFFE, 0x70000001, 0x4EFFFFFC)
  28     yield from check_case(dut, 0x7F7FFCFF, 0x70200201, 0x4ECCC7D5)
  29     yield from check_case(dut, 0x70200201, 0x7F7FFCFF, 0x302003E2)
  30
  31     count = 0
  32
  33     #regression tests
  34     stimulus_a = [0xbf9b1e94, 0x34082401, 0x5e8ef81, 0x5c75da81, 0x2b017]
  35     stimulus_b = [0xc038ed3a, 0xb328cd45, 0x114f3db, 0x2f642a39, 0xff3807ab]
  36     yield from run_test(dut, stimulus_a, stimulus_b, truediv, get_case)
  37     count += len(stimulus_a)
  38     print (count, "vectors passed")
  39
  40     yield from run_corner_cases(dut, count, truediv, get_case)
  41     yield from run_edge_cases(dut, count, truediv, get_case)
  42
  43
  44 if __name__ == '__main__':
  45     dut = FPDIV(width=32)
  46     run_simulation(dut, testbench(dut), vcd_name="test_div.vcd")
  47