From d8a19e0336347e10c2640b01b96fd09ab7288528 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Tue, 29 Jul 2014 16:57:55 -0600 Subject: doc: clarify that floating point parses "inf" * doc/coreutils.texi (Floating point): Document handling of "inf", "infinity", "NaN", and so on. --- doc/coreutils.texi | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 19a523d8e..96f07816f 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -1069,11 +1069,14 @@ Commands that accept floating point numbers as options, operands or input use the standard C functions @code{strtod} and @code{strtold} to convert from text to floating point numbers. These floating point numbers therefore can use scientific notation like @code{1.0e-34} and -@code{-10e100}. Modern C implementations also accept hexadecimal -floating point numbers such as @code{-0x.ep-3}, which stands for -@minus{}14/16 times @math{2^-3}, which equals @minus{}0.109375. The -@env{LC_NUMERIC} locale determines the decimal-point character. -@xref{Parsing of Floats,,, libc, The GNU C Library Reference Manual}. +@code{-10e100}. Commands that parse floating point also understand +case-insensitive @code{inf}, @code{infinity}, and @code{NaN}, although +whether such values are useful depends on the command in question. +Modern C implementations also accept hexadecimal floating point +numbers such as @code{-0x.ep-3}, which stands for @minus{}14/16 times +@math{2^-3}, which equals @minus{}0.109375. The @env{LC_NUMERIC} +locale determines the decimal-point character. @xref{Parsing of +Floats,,, libc, The GNU C Library Reference Manual}. @node Signal specifications @section Signal specifications -- cgit v1.2.3-54-g00ecf