Syntax extension to create floating point literals from hexadecimal strings

Once loaded, hexfloat!() is called with a string containing the hexadecimal floating-point literal, and an optional type (f32 or f64). If the type is omitted, the literal is treated the same as a normal unsuffixed literal.

Examples

To load the extension and use it:

#[phase(syntax)]
extern crate hexfloat;

fn main() {
    let val = hexfloat!("0x1.ffffb4", f32);
}

References

• ExploringBinary: hexadecimal floating point constants