src/add/test_add.py

   1 from random import randint
   2 from random import seed
   3 from operator import add
   4
   5 from nmigen import Module, Signal
   6 from nmigen.compat.sim import run_simulation
   7
   8 from nmigen_add_experiment import FPADD
   9
  10 from unit_test_single import (get_mantissa, get_exponent, get_sign, is_nan,
  11                                 is_inf, is_pos_inf, is_neg_inf,
  12                                 match, get_case, check_case, run_test)
  13
  14 def testbench(dut):
  15     yield from check_case(dut, 0xfe34f995, 0xff5d59ad, 0xff800000)
  16     yield from check_case(dut, 0x82471f51, 0x243985f, 0x801c3790)
  17     yield from check_case(dut, 0, 0, 0)
  18     yield from check_case(dut, 0x40000000, 0xc0000000, 0x00000000)
  19     yield from check_case(dut, 0x3F800000, 0x40000000, 0x40400000)
  20     yield from check_case(dut, 0x40000000, 0x3F800000, 0x40400000)
  21     yield from check_case(dut, 0x447A0000, 0x4488B000, 0x4502D800)
  22     yield from check_case(dut, 0x463B800A, 0x42BA8A3D, 0x463CF51E)
  23     yield from check_case(dut, 0x42BA8A3D, 0x463B800A, 0x463CF51E)
  24     yield from check_case(dut, 0x463B800A, 0xC2BA8A3D, 0x463A0AF6)
  25     yield from check_case(dut, 0xC2BA8A3D, 0x463B800A, 0x463A0AF6)
  26     yield from check_case(dut, 0xC63B800A, 0x42BA8A3D, 0xC63A0AF6)
  27     yield from check_case(dut, 0x42BA8A3D, 0xC63B800A, 0xC63A0AF6)
  28     yield from check_case(dut, 0xFFFFFFFF, 0xC63B800A, 0xFFC00000)
  29     yield from check_case(dut, 0x7F800000, 0x00000000, 0x7F800000)
  30     yield from check_case(dut, 0x00000000, 0x7F800000, 0x7F800000)
  31     yield from check_case(dut, 0xFF800000, 0x00000000, 0xFF800000)
  32     yield from check_case(dut, 0x00000000, 0xFF800000, 0xFF800000)
  33     yield from check_case(dut, 0x7F800000, 0x7F800000, 0x7F800000)
  34     yield from check_case(dut, 0xFF800000, 0xFF800000, 0xFF800000)
  35     yield from check_case(dut, 0x7F800000, 0xFF800000, 0xFFC00000)
  36     yield from check_case(dut, 0xFF800000, 0x7F800000, 0x7FC00000)
  37     yield from check_case(dut, 0x00018643, 0x00FA72A4, 0x00FBF8E7)
  38     yield from check_case(dut, 0x001A2239, 0x00FA72A4, 0x010A4A6E)
  39     yield from check_case(dut, 0x3F7FFFFE, 0x3F7FFFFE, 0x3FFFFFFE)
  40     yield from check_case(dut, 0x7EFFFFEE, 0x7EFFFFEE, 0x7F7FFFEE)
  41     yield from check_case(dut, 0x7F7FFFEE, 0xFEFFFFEE, 0x7EFFFFEE)
  42     yield from check_case(dut, 0x7F7FFFEE, 0x756CA884, 0x7F7FFFFD)
  43     yield from check_case(dut, 0x7F7FFFEE, 0x758A0CF8, 0x7F7FFFFF)
  44     yield from check_case(dut, 0x42500000, 0x51A7A358, 0x51A7A358)
  45     yield from check_case(dut, 0x51A7A358, 0x42500000, 0x51A7A358)
  46     yield from check_case(dut, 0x4E5693A4, 0x42500000, 0x4E5693A5)
  47     yield from check_case(dut, 0x42500000, 0x4E5693A4, 0x4E5693A5)
  48     #yield from check_case(dut, 1, 0, 1)
  49     #yield from check_case(dut, 1, 1, 1)
  50
  51     count = 0
  52
  53     #regression tests
  54     stimulus_a = [0x22cb525a, 0x40000000, 0x83e73d5c, 0xbf9b1e94, 0x34082401, 0x5e8ef81, 0x5c75da81, 0x2b017]
  55     stimulus_b = [0xadd79efa, 0xC0000000, 0x1c800000, 0xc038ed3a, 0xb328cd45, 0x114f3db, 0x2f642a39, 0xff3807ab]
  56     yield from run_test(dut, stimulus_a, stimulus_b, add)
  57     count += len(stimulus_a)
  58     print (count, "vectors passed")
  59
  60     #corner cases
  61     from itertools import permutations
  62     stimulus_a = [i[0] for i in permutations([0x80000000, 0x00000000, 0x7f800000, 0xff800000, 0x7fc00000, 0xffc00000], 2)]
  63     stimulus_b = [i[1] for i in permutations([0x80000000, 0x00000000, 0x7f800000, 0xff800000, 0x7fc00000, 0xffc00000], 2)]
  64     yield from run_test(dut, stimulus_a, stimulus_b, add)
  65     count += len(stimulus_a)
  66     print (count, "vectors passed")
  67
  68     #edge cases
  69     stimulus_a = [0x80000000 for i in range(1000)]
  70     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
  71     yield from run_test(dut, stimulus_a, stimulus_b, add)
  72     count += len(stimulus_a)
  73     print (count, "vectors passed")
  74
  75     stimulus_a = [0x00000000 for i in range(1000)]
  76     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
  77     yield from run_test(dut, stimulus_a, stimulus_b, add)
  78     count += len(stimulus_a)
  79     print (count, "vectors passed")
  80
  81     stimulus_b = [0x80000000 for i in range(1000)]
  82     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
  83     yield from run_test(dut, stimulus_a, stimulus_b, add)
  84     count += len(stimulus_a)
  85     print (count, "vectors passed")
  86
  87     stimulus_b = [0x00000000 for i in range(1000)]
  88     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
  89     yield from run_test(dut, stimulus_a, stimulus_b, add)
  90     count += len(stimulus_a)
  91     print (count, "vectors passed")
  92
  93     stimulus_a = [0x7F800000 for i in range(1000)]
  94     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
  95     yield from run_test(dut, stimulus_a, stimulus_b, add)
  96     count += len(stimulus_a)
  97     print (count, "vectors passed")
  98
  99     stimulus_a = [0xFF800000 for i in range(1000)]
 100     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
 101     yield from run_test(dut, stimulus_a, stimulus_b, add)
 102     count += len(stimulus_a)
 103     print (count, "vectors passed")
 104
 105     stimulus_b = [0x7F800000 for i in range(1000)]
 106     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
 107     yield from run_test(dut, stimulus_a, stimulus_b, add)
 108     count += len(stimulus_a)
 109     print (count, "vectors passed")
 110
 111     stimulus_b = [0xFF800000 for i in range(1000)]
 112     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
 113     yield from run_test(dut, stimulus_a, stimulus_b, add)
 114     count += len(stimulus_a)
 115     print (count, "vectors passed")
 116
 117     stimulus_a = [0x7FC00000 for i in range(1000)]
 118     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
 119     yield from run_test(dut, stimulus_a, stimulus_b, add)
 120     count += len(stimulus_a)
 121     print (count, "vectors passed")
 122
 123     stimulus_a = [0xFFC00000 for i in range(1000)]
 124     stimulus_b = [randint(0, 1<<32) for i in range(1000)]
 125     yield from run_test(dut, stimulus_a, stimulus_b, add)
 126     count += len(stimulus_a)
 127     print (count, "vectors passed")
 128
 129     stimulus_b = [0x7FC00000 for i in range(1000)]
 130     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
 131     yield from run_test(dut, stimulus_a, stimulus_b, add)
 132     count += len(stimulus_a)
 133     print (count, "vectors passed")
 134
 135     stimulus_b = [0xFFC00000 for i in range(1000)]
 136     stimulus_a = [randint(0, 1<<32) for i in range(1000)]
 137     yield from run_test(dut, stimulus_a, stimulus_b, add)
 138     count += len(stimulus_a)
 139     print (count, "vectors passed")
 140
 141     #seed(0)
 142     for i in range(100000):
 143         stimulus_a = [randint(0, 1<<32) for i in range(1000)]
 144         stimulus_b = [randint(0, 1<<32) for i in range(1000)]
 145         yield from run_test(dut, stimulus_a, stimulus_b, add)
 146         count += 1000
 147         print (count, "random vectors passed")
 148
 149 if __name__ == '__main__':
 150     dut = FPADD(width=32, single_cycle=True)
 151     run_simulation(dut, testbench(dut), vcd_name="test_add.vcd")
 152