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| author | Pádraig Brady <P@draigBrady.com> | 2010-04-28 23:54:33 +0100 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2010-04-29 18:55:57 +0100 |
| commit | 8b5087d4e62439503e3cba774de225893b9ea81a (patch) | |
| tree | 7ac7a407ac5368ca46082a807f17c16d009ded31 /doc | |
| parent | 7905d6d34dbeb73ef03b3c75f66dde9036634775 (diff) | |
| download | coreutils-8b5087d4e62439503e3cba774de225893b9ea81a.tar.xz | |
sort: use long doubles for general numeric mode
* src/sort.c (general_numcompare): Use long doubles unconditionally,
and strtold when available, to convert numbers with greater range and
precision. Performance was seen to be on par with standard doubles.
* doc/coreutils.texi (sort invocation): Amend the -g description to
mention long double rather than double, and strtold rather than strtod.
* src/getlimits.c (main): Output floating point limits for use in tests.
* tests/misc/sort-float: A new test to ensure sort is using long
doubles when possible, and that locale specific floats are handled.
* tests/Makefile.am: Reference the new test.
* tests/test-lib.sh (getlimits_): Normalize indenting.
* NEWS: Mention the new behaviour.
Reported by Nelson Beebe.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 73971c6a6..c8ba53c78 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -3767,8 +3767,8 @@ the final result, after the throwing away.)) @opindex --sort @cindex general numeric sort @vindex LC_NUMERIC -Sort numerically, using the standard C function @code{strtod} to convert -a prefix of each line to a double-precision floating point number. +Sort numerically, using the standard C function @code{strtold} to convert +a prefix of each line to a long double-precision floating point number. This allows floating point numbers to be specified in scientific notation, like @code{1.0e-34} and @code{10e100}. The @env{LC_NUMERIC} locale determines the decimal-point character. |