1 from random
import randint
2 from random
import seed
5 from sfpy
import Float32
11 return ((x
& 0x7f800000) >> 23) - 127
13 def set_exponent(x
, e
):
14 return (x
& ~
0x7f800000) |
((e
+127) << 23)
17 return ((x
& 0x80000000) >> 31)
20 return get_exponent(x
) == 128 and get_mantissa(x
) != 0
23 return get_exponent(x
) == 128 and get_mantissa(x
) == 0
26 return is_inf(x
) and not get_sign(x
)
29 return is_inf(x
) and get_sign(x
)
33 (is_pos_inf(x
) and is_pos_inf(y
)) or
34 (is_neg_inf(x
) and is_neg_inf(y
)) or
35 (is_nan(x
) and is_nan(y
)) or
39 def get_rs_case(dut
, a
, b
, mid
):
40 in_a
, in_b
= dut
.rs
[0]
42 yield dut
.ids
.in_mid
.eq(mid
)
49 a_ack
= (yield in_a
.ack
)
58 b_ack
= (yield in_b
.ack
)
66 out_z_stb
= (yield out_z
.stb
)
70 vout_z
= yield out_z
.v
71 #out_mid = yield dut.ids.out_mid
78 def check_rs_case(dut
, a
, b
, z
, mid
=None):
82 out_z
, out_mid
= yield from get_rs_case(dut
, a
, b
, mid
)
83 assert out_z
== z
, "Output z 0x%x not equal to expected 0x%x" % (out_z
, z
)
84 assert out_mid
== mid
, "Output mid 0x%x != expected 0x%x" % (out_mid
, mid
)
87 def get_case(dut
, a
, b
, mid
):
88 #yield dut.in_mid.eq(mid)
89 yield dut
.in_a
.v
.eq(a
)
90 yield dut
.in_a
.stb
.eq(1)
95 a_ack
= (yield dut
.in_a
.ack
)
98 yield dut
.in_a
.stb
.eq(0)
100 yield dut
.in_b
.v
.eq(b
)
101 yield dut
.in_b
.stb
.eq(1)
104 b_ack
= (yield dut
.in_b
.ack
)
107 yield dut
.in_b
.stb
.eq(0)
109 yield dut
.out_z
.ack
.eq(1)
112 out_z_stb
= (yield dut
.out_z
.stb
)
116 out_z
= yield dut
.out_z
.v
117 #out_mid = yield dut.out_mid
118 yield dut
.out_z
.ack
.eq(0)
122 return out_z
, mid
# TODO: mid
124 def check_case(dut
, a
, b
, z
, mid
=None):
128 out_z
, out_mid
= yield from get_case(dut
, a
, b
, mid
)
129 assert out_z
== z
, "Output z 0x%x not equal to expected 0x%x" % (out_z
, z
)
130 assert out_mid
== mid
, "Output mid 0x%x != expected 0x%x" % (out_mid
, mid
)
133 def run_test(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
):
135 expected_responses
= []
136 actual_responses
= []
137 for a
, b
in zip(stimulus_a
, stimulus_b
):
140 af
= Float32
.from_bits(a
)
141 bf
= Float32
.from_bits(b
)
143 expected_responses
.append((z
.get_bits(), mid
))
145 actual
= yield from get_case_fn(dut
, a
, b
, mid
)
146 actual_responses
.append(actual
)
148 if len(actual_responses
) < len(expected_responses
):
149 print ("Fail ... not enough results")
152 for expected
, actual
, a
, b
in zip(expected_responses
, actual_responses
,
153 stimulus_a
, stimulus_b
):
154 passed
= match(expected
[0], actual
[0])
155 if expected
[1] != actual
[1]: # check mid
156 print ("MID failed", expected
[1], actual
[1])
161 expected
= expected
[0]
163 print ("Fail ... expected:", hex(expected
), "actual:", hex(actual
))
166 print ("a mantissa:", a
& 0x7fffff)
167 print ("a exponent:", ((a
& 0x7f800000) >> 23) - 127)
168 print ("a sign:", ((a
& 0x80000000) >> 31))
171 print ("b mantissa:", b
& 0x7fffff)
172 print ("b exponent:", ((b
& 0x7f800000) >> 23) - 127)
173 print ("b sign:", ((b
& 0x80000000) >> 31))
175 print (hex(expected
))
176 print ("expected mantissa:", expected
& 0x7fffff)
177 print ("expected exponent:", ((expected
& 0x7f800000) >> 23) - 127)
178 print ("expected sign:", ((expected
& 0x80000000) >> 31))
181 print ("actual mantissa:", actual
& 0x7fffff)
182 print ("actual exponent:", ((actual
& 0x7f800000) >> 23) - 127)
183 print ("actual sign:", ((actual
& 0x80000000) >> 31))
187 corner_cases
= [0x80000000, 0x00000000, 0x7f800000, 0xff800000,
188 0x7fc00000, 0xffc00000]
190 def run_corner_cases(dut
, count
, op
, get_case_fn
):
192 from itertools
import permutations
193 stimulus_a
= [i
[0] for i
in permutations(corner_cases
, 2)]
194 stimulus_b
= [i
[1] for i
in permutations(corner_cases
, 2)]
195 yield from run_test(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
196 count
+= len(stimulus_a
)
197 print (count
, "vectors passed")
199 def run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
):
200 yield from run_test(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
201 yield from run_test(dut
, stimulus_b
, stimulus_a
, op
, get_case_fn
)
203 def run_cases(dut
, count
, op
, fixed_num
, num_entries
, get_case_fn
):
204 if isinstance(fixed_num
, int):
205 stimulus_a
= [fixed_num
for i
in range(num_entries
)]
206 report
= hex(fixed_num
)
208 stimulus_a
= fixed_num
211 stimulus_b
= [randint(0, 1<<32) for i
in range(num_entries
)]
212 yield from run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
213 count
+= len(stimulus_a
)
214 print (count
, "vectors passed 2^32", report
)
216 # non-canonical NaNs.
217 stimulus_b
= [set_exponent(randint(0, 1<<32), 128) \
218 for i
in range(num_entries
)]
219 yield from run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
220 count
+= len(stimulus_a
)
221 print (count
, "vectors passed Non-Canonical NaN", report
)
224 stimulus_b
= [set_exponent(randint(0, 1<<32), -127) \
225 for i
in range(num_entries
)]
226 yield from run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
227 count
+= len(stimulus_a
)
228 print (count
, "vectors passed exp=-127", report
)
231 stimulus_b
= [set_exponent(randint(0, 1<<32), -126) \
232 for i
in range(num_entries
)]
233 yield from run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
234 count
+= len(stimulus_a
)
235 print (count
, "vectors passed exp=-126", report
)
238 stimulus_b
= [set_exponent(randint(0, 1<<32), 127) \
239 for i
in range(num_entries
)]
240 yield from run_test_2(dut
, stimulus_a
, stimulus_b
, op
, get_case_fn
)
241 count
+= len(stimulus_a
)
242 print (count
, "vectors passed exp=127", report
)
246 def run_edge_cases(dut
, count
, op
, get_case_fn
):
248 for testme
in corner_cases
:
249 count
= yield from run_cases(dut
, count
, op
, testme
, 10, get_case_fn
)
251 for i
in range(100000):
252 stimulus_a
= [randint(0, 1<<32) for i
in range(10)]
253 count
= yield from run_cases(dut
, count
, op
, stimulus_a
, 10,