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fsign's result can be +0.0 or -0.0 for -0.0. We already calculate the signed zero, it's even faster to replace the fmul(fsign(x), ...) with ior. Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28938>