Merge "Do not use default initializer for union"

 */

class half {

    struct fp16 {

        uint16_t bits = 0;

        fp16() noexcept = default;

        uint16_t bits;

        explicit constexpr fp16() noexcept : bits(0) { }

        explicit constexpr fp16(uint16_t b) noexcept : bits(b) { }

        void setS(unsigned int s) noexcept { bits = uint16_t((bits & 0x7FFF) | (s<<15)); }

        void setE(unsigned int s) noexcept { bits = uint16_t((bits & 0xE3FF) | (s<<10)); }

    };

    struct fp32 {

        union {

            uint32_t bits = 0;

            uint32_t bits;

            float fp;

        };

        fp32() noexcept = default;

        explicit constexpr fp32(float f) : fp(f) { }

        explicit constexpr fp32() noexcept : bits(0) { }

        explicit constexpr fp32(float f) noexcept : fp(f) { }

        void setS(unsigned int s) noexcept { bits = uint32_t((bits & 0x7FFFFFFF) | (s<<31)); }

        void setE(unsigned int s) noexcept { bits = uint32_t((bits & 0x807FFFFF) | (s<<23)); }

        void setM(unsigned int s) noexcept { bits = uint32_t((bits & 0xFF800000) | (s<< 0)); }