Feature gate: #![feature(f32_from_f16)]

This is a tracking issue the From<f16> for f32 instance. Issue #123831 describes the problem:

Adding a From for f32 impl breaks some inference that currently works. From #123824:

fn main() {
    let x = f32::from(3.14);
}

The type checker now implements a workaround to keep that code compiling in the presence of the f16 implementation. Because that is a workaround, and we might get a better solution in the future, the implementation is kept unstable for now.

Public API

From<f16> for f32 { /* ... */ }

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• Implementation: Fallback {float} to f32 when f32: From<{float}> and add impl From<f16> for f32 #139087
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.