abs()

FASTLED_FORCE_INLINE s16x16x4 fl::s16x16x4::abs ( ) const

inline

Absolute value: branchless via mask and xor.

Definition at line 85 of file s16x16x4.h.

                                              {
        // mask = -1 if negative (sign extended), 0 if positive
        auto mask = simd::sra_i32_4(raw, 31);
        // flip bits if negative, then add 1 (two's complement)
        auto flipped = simd::xor_u32_4(raw, mask);
        return from_raw(simd::sub_i32_4(flipped, mask));
    }

References FASTLED_FORCE_INLINE.