Zig 0.17.0-dev (Split by item)

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fneg

compiler_rt.fneg

pub inline fn fneg(a: anytype) @TypeOf(a)

File

lib/compiler_rt.zig:582

Code

pub inline fn fneg(a: anytype) @TypeOf(a) {
    const F = @TypeOf(a);
    const bits = @typeInfo(F).float.bits;
    const U = @Int(.unsigned, bits);
    const sign_bit_mask = @as(U, 1) << (bits - 1);
    const negated = @as(U, @bitCast(a)) ^ sign_bit_mask;
    return @bitCast(negated);
}