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authorRaymond Hettinger <python@rcn.com>2004-07-14 21:06:55 (GMT)
committerRaymond Hettinger <python@rcn.com>2004-07-14 21:06:55 (GMT)
commit92960239388cb1714115ad2e7dd7767cc5c4e0eb (patch)
tree78f305be859770de5ea588b7379f4fe884469214 /Doc
parentef66debd7ef590304466d13dde4082632750fa7c (diff)
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Improve examples for working with the context API.
Diffstat (limited to 'Doc')
-rw-r--r--Doc/lib/libdecimal.tex12
1 files changed, 6 insertions, 6 deletions
diff --git a/Doc/lib/libdecimal.tex b/Doc/lib/libdecimal.tex
index 562aae6..cf21b8d 100644
--- a/Doc/lib/libdecimal.tex
+++ b/Doc/lib/libdecimal.tex
@@ -179,7 +179,7 @@ Decimal("19.29")
'1.34'
>>> float(a)
1.3400000000000001
->>> round(a, 1)
+>>> round(a, 1) # round() first converts to binary floating point
1.3
>>> int(a)
1
@@ -217,9 +217,6 @@ because many of the traps are enabled:
\begin{verbatim}
>>> myothercontext = Context(prec=60, rounding=ROUND_HALF_DOWN)
->>> myothercontext
-Context(prec=60, rounding=ROUND_HALF_DOWN, Emin=-999999999, Emax=999999999,
- capitals=1, flags=[], traps=[])
>>> setcontext(myothercontext)
>>> Decimal(1) / Decimal(7)
Decimal("0.142857142857142857142857142857142857142857142857142857142857")
@@ -855,10 +852,13 @@ started so that there won't be a race condition between threads calling
\begin{verbatim}
# Set applicationwide defaults for all threads about to be launched
-DefaultContext = Context(prec=12, rounding=ROUND_DOWN, traps=[InvalidOperation])
+DefaultContext.prec = 12
+DefaultContext.rounding = ROUND_DOWN
+DefaultContext.traps = ExtendedContext.traps.copy()
+DefaultContext.traps[InvalidOperation] = 1
setcontext(DefaultContext)
-# Afterward, the threads can be started
+# Afterwards, the threads can be started
t1.start()
t2.start()
t3.start()