# 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.

## IDE Equivalent

None

## Alternate Options

Linux and macOS*: None

Windows: /QIfist (this is a deprecated option)

Parent topic: Floating-Point Options