pub const fn copysignf128(x: f128, y: f128) -> f128
core_intrinsics)
Copies the sign from y to x for f128 values.
The stabilized version of this intrinsic is f128::copysign
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/intrinsics/fn.copysignf128.html