Activity for Evan Lavelle
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Evan Lavelle posted a comment on ticket #1030
Hi Martin - thanks; that surprised me. I've tried the code on EDA Playground, and VCS agrees with ModelSim, while Icarus, Riviera (which I think normally follows ModelSim), GPL-CVer, and Veriwell agree with XL. The problem is that the section you've quoted makes sense for $random(n), but it doesn't cover the case where no seed is provided. The LRM appears to have nothing to say about this. '$random' clearly can't map on to 'rtl_dist_uniform(seed, LONG_MIN, LONG_MAX)' as no seed is supplied, and 'rtl_dist_uniform'...
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Icarus is not random-stable
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Thanks very much - my Icarus regressions all now pass.
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Hi Martin - that's great - thanks. It's not quite complete, unfortunately, but I'm not sure how far it's worth going with this. The attached is a slightly modified version of the test, which adds two further $writes. $write #3 has a function call ('foo(0)') as the actual parameter, where the function returns a real, and $write expects '%d'. The real it returns is 2.5, so this should be rounded to 3. $write #4 is the same, except that the the actual parameter is now '$signed(foo(0))'. This is probably...
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Reals are incorrectly rounded to ints
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Thank you - confirmed fixed.
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v10 regression: task inout parameter copy-out fails, Ok in 0.9.7
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Sorry about that - only just managed to get back on to this after 7 months! I did a git pull and re-ran the regressions just before your mail, and can confirm that all the failures that I had in July are now gone. So, presumably #1016 and #1017 fixed everything. Great work - thanks very much.
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Note that this worked in earlier versions of iverilog.
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Program fails until a $write debug statement is added
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iverilog creates infinite loop
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vvp incorrectly exits on termination of a begin/end
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