flteval

(x86) Controls floating
point evaluation.

fma

(SPARC) Enables automatic generation of floatingpoint, fused, multiplyadd
instructions.

fnonstd

Causes nonstandard initialization of floatingpoint
arithmetic hardware.

fns

(SPARC) Turns on the SPARC nonstandard floatingpoint mode.

fprecision

(x86) Initializes the roundingprecision mode bits in the Floatingpoint Control
Word

fround

Sets the IEEE 754 rounding mode that is established
at runtime during the program initialization.

fsimple

Allows the optimizer to make simplifying assumptions concerning floatingpoint
arithmetic.

fsingle

Causes the compiler to evaluate float expressions
as single precision rather than double precision.

fstore

(x86) Causes the compiler
to convert the value of a floatingpoint expression or function to the type
on the lefthand side of an assignment

ftrap

Sets the
IEEE 754 trapping mode in effect at startup.

nofstore

(x86) Does not convert the value of a floatingpoint expression
or function to the type on the lefthand side of an assignment

xdepend

(SPARC) Analyzes loops for interiteration data dependencies and does
loop restructuring.

xlibmieee

Forces IEEE 754 style return values for
math routines in exceptional cases.

xopenmp

(SPARC) Supports the OpenMP interface
for explicit parallelization including a set of source code directives, runtime
library routines, and environment variables

xsfpconst

Represents unsuffixed floatingpoint constants
as single precision

xvector

Enable automatic generation of calls to
the vector library functions.
