IPF-fltacc, QIPF-fltacc

Disables optimizations that affect floating-point accuracy. This is a deprecated option.

IDE Equivalent

None

Architectures

IA-64 architecture

Syntax

Linux:

-IPF-fltacc

-no-IPF-fltacc

Mac OS X:

None

Windows:

/QIPF-fltacc

/QIPF-fltacc-

Arguments

None

Default

-no-IPF-fltacc
or/QIPF-fltacc-

Optimizations are enabled that affect floating-point accuracy.

Description

This option disables optimizations that affect floating-point accuracy.

If the default setting is used, the compiler may apply optimizations that reduce floating-point accuracy.

You can use this option to improve floating-point accuracy, but at the cost of disabling some optimizations.

The recommended method to control the semantics of floating-point calculations is to use option -fp-model (Linux) or /fp (Windows).

Instead of using -IPF-fltacc (Linux) or /QIPF-fltacc (Windows), you can use -fp-model precise (Linux) or /fp:precise (Windows).

Instead of using -no-IPF-fltacc (Linux) or /QIPF-fltacc- (Windows), you can use -fp-model fast (Linux) or /fp:fast (Windows).

Alternate Options

None

See Also