Author: Armin Rigo <[email protected]>
Branch:
Changeset: r49032:2466f0e89311
Date: 2011-11-09 19:00 +0100
http://bitbucket.org/pypy/pypy/changeset/2466f0e89311/
Log: Tweak.
diff --git a/pypy/rpython/lltypesystem/module/ll_math.py
b/pypy/rpython/lltypesystem/module/ll_math.py
--- a/pypy/rpython/lltypesystem/module/ll_math.py
+++ b/pypy/rpython/lltypesystem/module/ll_math.py
@@ -108,14 +108,17 @@
#
# Custom implementations
+VERY_LARGE_FLOAT = 1.0
+while VERY_LARGE_FLOAT * 100.0 != INFINITY:
+ VERY_LARGE_FLOAT *= 64.0
+
def ll_math_isnan(y):
# By not calling into the external function the JIT can inline this.
# Floats are awesome.
return y != y
def ll_math_isinf(y):
- # Use a bitwise OR so the JIT doesn't produce 2 different guards.
- return (y == INFINITY) | (y == -INFINITY)
+ return (y + VERY_LARGE_FLOAT) == y
def ll_math_isfinite(y):
# Use a custom hack that is reasonably well-suited to the JIT.
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