Function fabs 

pub const fn fabs<T: FloatPrimitive>(x: T) -> T

🔬This is a nightly-only experimental API. (core_intrinsics)

This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).

Returns the absolute value of a floating-point value.

The stabilized versions of this intrinsic are available on the float primitives via the abs method. For example, f32::abs.