Disables/enables the SPARC nonstandard floating-point mode. 

-fns[=(no|yes)]

"-fns[=(yes|no)] "

x86: Sets floating-point precision mode.

-fprecision=p

"-fprecision=p"

Sets IEEE rounding mode in effect at start-up. 

-fround=r

"-fround=r"

Sets floating-point optimization preferences. 

-fsimple=n

"-fsimple[=n]"

x86: Forces precision of floating-point expressions.

-fstore

"-fstore"

Sets IEEE trapping mode in effect at start-up. 

-ftrap=t

"-ftrap=t"

x86: Disables forced precision of expression.

-nofstore

"-nofstore"

Causes libm to return IEEE 754 values for math routines in exceptional cases.

-xlibmieee

"-xlibmieee"