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Fix threshold value for denormal to be taken as 0

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(float)"1.1754944e-38" is != 0
(float)"1.1754943e-38" is == 0

Yet, 1.1754944e-38 == 1.1754943e-38.

The fix is to perform the operations as doubles, and convert to F32 *after* comparing the denormal range.
This commit is contained in:
Sei Lisa 2018-04-27 23:44:27 +02:00
parent 1afe1643c0
commit 091f06cccc
1 changed files with 3 additions and 3 deletions
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6
lslopt/lslbasefuncs.py
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@ -456,18 +456,18 @@ def InternalTypecast(val, out, InList, f32):
if match is None: if match is None:
return 0.0 return 0.0
if match.group(1): if match.group(1):
ret = F32(float.fromhex(match.group(0)), f32) ret = float.fromhex(match.group(0))
elif match.group(2): elif match.group(2):
# (float)"-nan" produces NaN instead of Indet, even though # (float)"-nan" produces NaN instead of Indet, even though
# (vector)"<-nan,0,0>" produces <Indet, 0., 0.>. Go figure. # (vector)"<-nan,0,0>" produces <Indet, 0., 0.>. Go figure.
ret = NaN ret = NaN
else: else:
ret = F32(float(match.group(0)), f32) ret = float(match.group(0))
if not lslcommon.LSO and abs(ret) < 1.1754943508222875e-38: if not lslcommon.LSO and abs(ret) < 1.1754943508222875e-38:
# Mono doesn't return denormals when using (float)"val" # Mono doesn't return denormals when using (float)"val"
# (but it returns them when using (vector)"<val,...>") # (but it returns them when using (vector)"<val,...>")
ret = 0.0 ret = 0.0
return ret return F32(ret, f32)
if out == int: if out == int:
match = int_re.search(val) match = int_re.search(val)
if match is None: if match is None: