Author: Armin Rigo <[email protected]>
Branch:
Changeset: r84840:09b703c1e5e6
Date: 2016-05-30 20:51 +0200
http://bitbucket.org/pypy/pypy/changeset/09b703c1e5e6/
Log: This version uses a "-" instead of a "*", which is a tiny bit faster
diff --git a/rpython/rtyper/lltypesystem/module/ll_math.py
b/rpython/rtyper/lltypesystem/module/ll_math.py
--- a/rpython/rtyper/lltypesystem/module/ll_math.py
+++ b/rpython/rtyper/lltypesystem/module/ll_math.py
@@ -132,8 +132,7 @@
# Floats are awesome (bis).
if use_library_isinf_isnan and not jit.we_are_jitted():
return bool(_lib_finite(y))
- z = 0.0 * y
- return z == z # i.e.: z is not a NaN
+ return (y - y) == 0.0 # (y - y) is NaN if y is an infinite or NaN
ll_math_floor = math_floor
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