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Tests: Add a test to check if there is overflow or rounding (#2945)

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Yutetsu TAKATSUKASA 2021-05-11 22:27:31 +09:00 committed by GitHub
parent 1422c23434
commit 00cedf3797
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9 changed files with 19 additions and 0 deletions
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3
test_regress/t/t_time_vpi.v
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@ -18,6 +18,7 @@ module t (/*AUTOARG*/
// verilator lint_off REALCVT
time digits = 5432109876.543210ns; // Will round to time units
realtime rdigits = 5432109876.543210ns; // Will round to time precision
time high_acc = 64'd12345678901234567890; // Would lose accuracy if calculated in double
// verilator lint_on REALCVT
always @ (posedge clk) begin
@ -31,10 +32,12 @@ module t (/*AUTOARG*/
$write("[%0t] time%%0d=%0d 123%%0t=%0t\n", $time, $time, 123);
$write(" dig%%0t=%0t dig%%0d=%0d\n", digits, digits);
$write(" rdig%%0t=%0t rdig%%0f=%0f\n", rdigits, rdigits);
$write(" acc%%0t=%0t acc%%0d=%0d\n", high_acc, high_acc);
$timeformat(-9, 6, "ns", 16);
$write("[%0t] time%%0d=%0d 123%%0t=%0t\n", $time, $time, 123);
$write(" dig%%0t=%0t dig%%0d=%0d\n", digits, digits);
$write(" rdig%%0t=%0t rdig%%0f=%0f\n", rdigits, rdigits);
$write(" acc%%0t=%0t acc%%0d=%0d\n", high_acc, high_acc);
$write("[%0t] stime%%0t=%0t stime%%0d=%0d stime%%0f=%0f\n",
$time, $stime, $stime, $stime);
// verilator lint_off REALCVT

2
test_regress/t/t_time_vpi_100s10ms.out
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@ -3,9 +3,11 @@ Time scale of t is 100s / 10ms
[100000000] time%0d=10000 123%0t=1230000
dig%0t=0 dig%0d=0
rdig%0t=543 rdig%0f=0.054321
acc%0t=11177671081359484928 acc%0d=12345678901234567890
[1000000000000000.000000ns] time%0d=10000 123%0t=12300000000000.000000ns
dig%0t=0.000000ns dig%0d=0
rdig%0t=5432109876.543210ns rdig%0f=0.054321
acc%0t=111776710813594856498135040.000000ns acc%0d=12345678901234567890
[1000000000000000.000000ns] stime%0t=1000000000000000.000000ns stime%0d=10000 stime%0f=10000.000000
[1000000000000000.000000ns] rtime%0t=1000000000000000.000000ns rtime%0d=10000 rtime%0f=10000.000000
global vpiSimTime = 0,100000000 vpiScaledRealTime = 1e+08

2
test_regress/t/t_time_vpi_10ms10ns.out
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@ -3,9 +3,11 @@ Time scale of t is 10ms / 10ns
[60000000] time%0d=60 123%0t=123000000
dig%0t=543000000 dig%0d=543
rdig%0t=543210988 rdig%0f=543.210988
acc%0t=10962463713375475712 acc%0d=12345678901234567890
[600000000.000000ns] time%0d=60 123%0t=1230000000.000000ns
dig%0t=5430000000.000000ns dig%0d=543
rdig%0t=5432109876.543210ns rdig%0f=543.210988
acc%0t=109624637133754744832.000000ns acc%0d=12345678901234567890
[600000000.000000ns] stime%0t=600000000.000000ns stime%0d=60 stime%0f=60.000000
[600000000.000000ns] rtime%0t=600000000.000000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,60000000 vpiScaledRealTime = 6e+07

2
test_regress/t/t_time_vpi_1fs1fs.out
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@ -3,9 +3,11 @@ Time scale of t is 1fs / 1fs
[60] time%0d=60 123%0t=123
dig%0t=5432109876543210 dig%0d=5432109876543210
rdig%0t=5432109876543210 rdig%0f=5432109876543210.000000
acc%0t=12345678901234567168 acc%0d=12345678901234567890
[0.000060ns] time%0d=60 123%0t=0.000123ns
dig%0t=5432109876.543210ns dig%0d=5432109876543210
rdig%0t=5432109876.543210ns rdig%0f=5432109876543210.000000
acc%0t=12345678901234.566406ns acc%0d=12345678901234567890
[0.000060ns] stime%0t=0.000060ns stime%0d=60 stime%0f=60.000000
[0.000060ns] rtime%0t=0.000060ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,60 vpiScaledRealTime = 60

2
test_regress/t/t_time_vpi_1ms10ns.out
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@ -3,9 +3,11 @@ Time scale of t is 1ms / 10ns
[6000000] time%0d=60 123%0t=12300000
dig%0t=543200000 dig%0d=5432
rdig%0t=543210988 rdig%0f=5432.109877
acc%0t=1096246371337547520 acc%0d=12345678901234567890
[60000000.000000ns] time%0d=60 123%0t=123000000.000000ns
dig%0t=5432000000.000000ns dig%0d=5432
rdig%0t=5432109876.543210ns rdig%0f=5432.109877
acc%0t=10962463713375473664.000000ns acc%0d=12345678901234567890
[60000000.000000ns] stime%0t=60000000.000000ns stime%0d=60 stime%0f=60.000000
[60000000.000000ns] rtime%0t=60000000.000000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,6000000 vpiScaledRealTime = 6e+06

2
test_regress/t/t_time_vpi_1ns1ns.out
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@ -3,9 +3,11 @@ Time scale of t is 1ns / 1ns
[60] time%0d=60 123%0t=123
dig%0t=5432109877 dig%0d=5432109877
rdig%0t=5432109877 rdig%0f=5432109876.543210
acc%0t=12345678901234567168 acc%0d=12345678901234567890
[60.000000ns] time%0d=60 123%0t=123.000000ns
dig%0t=5432109877.000000ns dig%0d=5432109877
rdig%0t=5432109876.543210ns rdig%0f=5432109876.543210
acc%0t=12345678901234565120.000000ns acc%0d=12345678901234567890
[60.000000ns] stime%0t=60.000000ns stime%0d=60 stime%0f=60.000000
[60.000000ns] rtime%0t=60.000000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,60 vpiScaledRealTime = 60

2
test_regress/t/t_time_vpi_1ps1fs.out
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@ -3,9 +3,11 @@ Time scale of t is 1ps / 1fs
[60000] time%0d=60 123%0t=123000
dig%0t=5432109876543000 dig%0d=5432109876543
rdig%0t=5432109876543209 rdig%0f=5432109876543.209961
acc%0t=4807115922877858816 acc%0d=12345678901234567890
[0.060000ns] time%0d=60 123%0t=0.123000ns
dig%0t=5432109876.543000ns dig%0d=5432109876543
rdig%0t=5432109876.543209ns rdig%0f=5432109876543.209961
acc%0t=4807115922877.858398ns acc%0d=12345678901234567890
[0.060000ns] stime%0t=0.060000ns stime%0d=60 stime%0f=60.000000
[0.060000ns] rtime%0t=0.060000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,60000 vpiScaledRealTime = 60000

2
test_regress/t/t_time_vpi_1s10ns.out
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@ -3,9 +3,11 @@ Time scale of t is 1s / 10ns
[6000000000] time%0d=60 123%0t=12300000000
dig%0t=500000000 dig%0d=5
rdig%0t=543210988 rdig%0f=5.432110
acc%0t=7888470988684038144 acc%0d=12345678901234567890
[60000000000.000000ns] time%0d=60 123%0t=123000000000.000000ns
dig%0t=5000000000.000000ns dig%0d=5
rdig%0t=5432109876.543210ns rdig%0f=5.432110
acc%0t=78884709886840389632.000000ns acc%0d=12345678901234567890
[60000000000.000000ns] stime%0t=60000000000.000000ns stime%0d=60 stime%0f=60.000000
[60000000000.000000ns] rtime%0t=60000000000.000000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 1,1705032704 vpiScaledRealTime = 6e+09

2
test_regress/t/t_time_vpi_1us1ns.out
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@ -3,9 +3,11 @@ Time scale of t is 1us / 1ns
[60000] time%0d=60 123%0t=123000
dig%0t=5432110000 dig%0d=5432110
rdig%0t=5432109877 rdig%0f=5432109.876543
acc%0t=4807115922877858816 acc%0d=12345678901234567890
[60000.000000ns] time%0d=60 123%0t=123000.000000ns
dig%0t=5432110000.000000ns dig%0d=5432110
rdig%0t=5432109876.543209ns rdig%0f=5432109.876543
acc%0t=4807115922877858816.000000ns acc%0d=12345678901234567890
[60000.000000ns] stime%0t=60000.000000ns stime%0d=60 stime%0f=60.000000
[60000.000000ns] rtime%0t=60000.000000ns rtime%0d=60 rtime%0f=60.000000
global vpiSimTime = 0,60000 vpiScaledRealTime = 60000