tiny.simd.bf16FromF64

1pub fn fromF64(value: f64) BFloat16 {2        const bits: u64 = @bitCast(value);3        const rounded_bits = (bits & 0xffff_ffc0_0000_0000) |4            ((bits +% 0x0000_003f_ffff_ffff) & 0x0000_0040_0000_0000);5        return fromF32(@floatCast(@as(f64, @bitCast(rounded_bits))));6    }

1pub const bf16FromF64 = BFloat16.fromF64;