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invoke.texi (i386 and x86-64 Options): Two small spell fixes. 

* doc/invoke.texi (i386 and x86-64 Options) [mrecip]:
	Two small spell fixes.

From-SVN: r131414
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Uros Bizjak 2008-01-09 08:35:49 +01:00
parent 876e92ef8c
commit b73d152763
1 changed files with 2 additions and 2 deletions
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@ -10647,14 +10647,14 @@ or @code{remainder} built-in functions: see @ref{Other Builtins} for details.
@item -mrecip
@opindex mrecip
This option will enable GCC to use RCPSS and RSQRTSS instructions (and their
vectorized variants RCPPS and RSQRTPS) with additional Newton-Rhapson step
vectorized variants RCPPS and RSQRTPS) with an additional Newton-Rhapson step
to increase precision instead of DIVSS and SQRTSS (and their vectorized
variants) for single precision floating point arguments. These instructions
are generated only when @option{-funsafe-math-optimizations} is enabled
together with @option{-finite-math-only} and @option{-fno-trapping-math}.
Note that while the throughput of the sequence is higher than the throughput
of the non-reciprocal instruction, the precision of the sequence can be
decreased up to 2 ulp (i.e. the inverse of 1.0 equals 0.99999994).
decreased by up to 2 ulp (i.e. the inverse of 1.0 equals 0.99999994).
@item -mveclibabi=@var{type}
@opindex mveclibabi