From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 16 Nov 2001 20:10:52 +0000 (+0000)
Subject: (C Compiler): Document that HAVE_LONG_DOUBLE is defined only if
X-Git-Tag: AUTOCONF-2.52g~51
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4af2c02cdfc5669bfa6a975e6db0eb9e5a46c2af;p=thirdparty%2Fautoconf.git

(C Compiler): Document that HAVE_LONG_DOUBLE is defined only if
long double is better than double.
---

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index a60b3c86a..38f1833e0 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -4763,10 +4763,9 @@ unless the C compiler predefines it.
 @defmac AC_C_LONG_DOUBLE
 @acindex C_LONG_DOUBLE
 @cvindex HAVE_LONG_DOUBLE
-If the C compiler supports the @code{long double} type, define
-@code{HAVE_LONG_DOUBLE}.  Some C compilers that do not define
-@code{__STDC__} do support the @code{long double} type; some compilers
-that define @code{__STDC__} do not support @code{long double}.
+If the C compiler supports a working @code{long double} type with more
+range or precision than the @code{double} type, define
+@code{HAVE_LONG_DOUBLE}.
 @end defmac
 
 @defmac AC_C_STRINGIZE