On Tue, Mar 19, 2013 at 9:22 AM, Pekka Jääskeläinen <
[email protected]> wrote:
> OK,
>
> Vecmathlib mode does not crash the compilation but the tests
> fail with wrong results and even hangs. You can see it when
> running the convert_types test by hand:
>
> kernel/kernel test_convert_type
> ...
> FAIL: convert_ulong16_rte((float16)) - sample#: 14 element#: 4 expected:
> 0x0000000000000002 actual: 0000000000000000
> FAIL: convert_ulong16_sat_rte((**float16)) - sample#: 14 element#: 0
> expected: 0x00038d7ea4000000 actual: 0x00038d7eac000000
> FAIL: convert_ulong16_rtp((float16)) - sample#: 14 element#: 4 expected:
> 0x0000000000000002 actual: 0000000000000000
> FAIL: convert_ulong16_sat_rtp((**float16)) - sample#: 14 element#: 0
> expected: 0x00038d7ea4000000 actual: 0x00038d7e9c000000
> FAIL: convert_ulong16_rtn((float16)) - sample#: 14 element#: 4 expected:
> 0x0000000000000001 actual: 0000000000000000
> FAIL: convert_ulong16_sat_rtn((**float16)) - sample#: 14 element#: 0
> expected: 0x00038d7ea4000000 actual: 0x00038d7eac000000
> FAIL: convert_ulong16_rte((float16)) - sample#: 15 element#: 4 expected:
> 0x0000000000000002 actual: 0000000000000000
> FAIL: convert_ulong16_rtp((float16)) - sample#: 15 element#: 4 expected:
> 0x0000000000000002 actual: 0000000000000000
> FAIL: convert_ulong16_rtn((float16)) - sample#: 15 element#: 4 expected:
> 0x0000000000000001 actual: 0000000000000000
>
I believe this fails because e.g. convert_ulong16_rte (the first failing
function) is based on two calls to convert_ulong8 (without the _rte
suffix). On the other hand, I think that _rte is the default behaviour, so
this could be fine.
This is ultimately implemented via a scalar function convert_ulong, which
evaluates "(ulong)x". This does not invoke Vecmathlib.
-erik
--
Erik Schnetter <[email protected]>
http://www.perimeterinstitute.ca/personal/eschnetter/
AIM: eschnett247, Skype: eschnett, Google Talk: [email protected]
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