* doc/autoconf.texi (Particular Types): AC_C_LONG_DOUBLE is now

obsolescent.
* NEWS: Document this.

diff --git a/ChangeLog b/ChangeLog
index 042af7d4f95d4acb41317abcac33446dc65d89a3..84869c2e858066a213f053b5bc2ebc282a0c29a4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-04-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+       * doc/autoconf.texi (Particular Types): AC_C_LONG_DOUBLE is now
+       obsolescent.
+       * NEWS: Document this.
+
 2007-03-29  Paul Eggert  <eggert@cs.ucla.edu>
 
        * doc/autoconf.texi (Here-Documents, Limitations of Builtins):

diff --git a/NEWS b/NEWS
index 9a8d165bbcd894958f98e5051d84413e71a69b40..b9e6487db95fba47a77e17de846b03d0eca2e387 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -14,6 +14,13 @@
 ** For portability with the eventual M4 2.0, macros should no longer use
    anything larger than $9 to refer to arguments.
 
+** AC_C_LONG_DOUBLE is obsolescent.
+  The documentation now says that AC_C_LONG_DOUBLE is obsolescent: it
+  tests for problems that are so old that it is no longer of practical
+  importance on current systems.  New programs need not use
+  AC_C_LONG_DOUBLE.  We have no current plans to remove it.
+
+
 * Major changes in Autoconf 2.61a (2006-12-11)
 
 ** AC_FUNC_FSEEKO was broken in 2.61; it didn't make fseeko and ftello visible

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 514fe3efda245d4cc32deb798841125d373cfaad..29ddd9e801ceca8309f06ee4f54b7bdfafd1f2e6 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -5959,6 +5959,9 @@ exists.
 If the C compiler supports a working @code{long double} type, define
 @code{HAVE_LONG_DOUBLE}.  The @code{long double} type might have the
 same range and precision as @code{double}.
+
+This macro is obsolescent, as current C compilers support @code{long
+double}.  New programs need not use this macro.
 @end defmac
 
 @defmac AC_TYPE_LONG_DOUBLE_WIDER