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Strings representing denormals no longer give 0 when cast to float

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This annoyance and discrepancy with LSO was finally fixed by Linden Lab. The change has prompted some modifications to the test suite to accommodate for the new results. A further improvement has been to make these tests more friendly to be run in SL, making it easier to verify the results.

Fixes #17.

Reported by SaladDais@users.noreply.github.com - thanks!
This commit is contained in:
Sei Lisa 2022-05-17 13:39:31 +02:00
parent 7c630f4ce4
commit 281ff4d96a
8 changed files with 65 additions and 41 deletions
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25
lslopt/lslbasefuncs.py
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@ -500,16 +500,25 @@ def InternalTypecast(val, out, InList, f32):
return 0.0
if match.group(1):
ret = float.fromhex(match.group(0))
elif match.group(2):
# (float)"-nan" produces NaN instead of Indet, even though
# (vector)"<-nan,0,0>" produces <Indet, 0., 0.>. Go figure.
ret = NaN
# The following is no longer true as of Server 2022-05-05.571557;
# exact date of change is unknown.
# (float)"-nan" returns -nan now.
#elif match.group(2):
# # (float)"-nan" produces NaN instead of Indet, even though
# # (vector)"<-nan,0,0>" produces <Indet, 0., 0.>. Go figure.
# ret = NaN
else:
ret = float(match.group(0))
if not lslcommon.LSO and abs(ret) < 1.1754943157898259e-38:
# Mono doesn't return denormals when using (float)"val"
# (but it returns them when using (vector)"<val,...>")
ret = 0.0
# The following is no longer true as of Server 2022-05-05.571557;
# exact date of change is unknown.
# Thanks to SaladDais@users.noreply.github.com for noticing.
# Note that if the code needs to be resurrected, the sign needs
# to be verified for the case (float)"-0.0"; we can no longer
# check how it worked before.
#if not lslcommon.LSO and abs(ret) < 1.1754943157898259e-38:
# # Mono doesn't return denormals when using (float)"val"
# # (but it returns them when using (vector)"<val,...>")
# ret = 0.0
return F32(ret, f32)
if out == int:
match = int_re.search(val)