Developer Guide and Reference

Contents

rcd, Qrcd

Enables fast float-to-integer conversions. This is a deprecated option. There is no replacement option.

Syntax

Linux:
-rcd
macOS:
-rcd
Windows:
/Qrcd
Arguments
None
Default
OFF
Floating-point values are truncated when a conversion to an integer is involved.
Description
This option enables fast float-to-integer conversions. It can improve the performance of code that requires floating-point-to-integer conversions.
The system default floating-point rounding mode is round-to-nearest. However, the
C
language requires floating-point values to be truncated when a conversion to an integer is involved. To do this, the compiler must change the rounding mode to truncation before each floating-point-to-integer conversion and change it back afterwards.
This option disables the change to truncation of the rounding mode for all floating-point calculations, including floating point-to-integer conversions. This option can improve performance, but floating-point conversions to integer will not conform to
C
semantics.
Alternate Options
Linux
and
macOS*
: None
Windows:
/QIfist
(this is a deprecated option)