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Diffstat (limited to 'gcc/doc/install.texi')
| -rw-r--r-- | gcc/doc/install.texi | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 569a399e72e..76545c08996 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -1304,11 +1304,20 @@ is removed entirely in the next major release, unless someone steps forward to maintain the port. @item --enable-decimal-float +@itemx --enable-decimal-float=yes +@itemx --enable-decimal-float=no +@itemx --enable-decimal-float=bid +@itemx --enable-decimal-float=dpd @itemx --disable-decimal-float -Enable (or disable) support for the C decimal floating point -extension. This is enabled by default only on PowerPC GNU/Linux -systems. Other systems may also support it, but require the user to -specifically enable it. +Enable (or disable) support for the C decimal floating point extension +that is in the IEEE 754R extension to the IEEE754 floating point +standard. This is enabled by default only on PowerPC, i386, and +x86_64 GNU/Linux systems. Other systems may also support it, but +require the user to specifically enable it. You can optionally +control which decimal floating point format is used (either @samp{bid} +or @samp{dpd}). The @samp{bid} (binary integer decimal) format is +default on i386 and x86_64 systems, and the @samp{dpd} (densely packed +decimal) format is default on PowerPC systems. @item --with-long-double-128 Specify if @code{long double} type should be 128-bit by default on selected |