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(C Compiler): Document that HAVE_LONG_DOUBLE is defined only if

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long double is better than double.
This commit is contained in:
Paul Eggert 2001-11-16 20:10:52 +00:00
parent 71a641098a
commit 4af2c02cdf
1 changed files with 3 additions and 4 deletions
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doc/autoconf.texi
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@ -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