# Constant std::f64::MANTISSA_DIGITS

1.0.0 · source ·

    pub const MANTISSA_DIGITS: u32 = f64::MANTISSA_DIGITS; // 53u32

👎Deprecating in a future Rust version: replaced by the `MANTISSA_DIGITS` associated constant on `f64`
Expand description

Number of significant digits in base 2. Use `f64::MANTISSA_DIGITS` instead.

## Examples

    // deprecated way
    let d = std::f64::MANTISSA_DIGITS;

    // intended way
    let d = f64::MANTISSA_DIGITS;

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