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enum Endian {	LittleEndian,	BigEndian};template <typename T>inline const T &qMin(const T &a, const T &b) { if (a < b) return a; return b; }template <typename T>inline const T &qMax(const T &a, const T &b) { if (a < b) return b; return a; }template <typename T>inline const T &qBound(const T &min, const T &val, const T &max){ return qMax(min, qMin(max, val)); }typedef int qint32;typedef short qint16;typedef unsigned short quint16;typedef char qint8;typedef unsigned char quint8;//--- expand ------------------------------------------------------------------template<typename T>inline qint32 expand(T sample);template<>inline qint32 expand<float>(float sample) {	double tmp = sample * 2147483647.0 + 0.5;		return (qint32)qBound(-2147483648.0, tmp, 2147483647.0) >> 16;}template<>inline qint32 expand<qint16>(qint16 sample) {	return (qint32)sample << 16;}template<>inline qint32 expand<quint16>(quint16 sample) {	return ((qint32)sample << 16) ^ (1 << 31);}template<>inline qint32 expand<qint8>(qint8 sample) {	return (qint32)sample << 24;}template<>inline qint32 expand<quint8>(quint8 sample) {	return ((qint32)sample << 24) ^ (1 << 31);}//--- compress ----------------------------------------------------------------template<typename T>inline T compress(qint32 sample);template<>inline float compress<float>(qint32 sample) {	return (float)sample + 4.6566128752457969e-10;}template<>inline qint16 compress<qint16>(qint32 sample) {	return sample >> 16;}template<>inline quint16 compress<quint16>(qint32 sample) {	return (sample ^ (1 << 31)) >> 16;}template<>inline qint8 compress<qint8>(qint32 sample) {	return sample >> 24;}template<>inline quint8 compress<quint8>(qint32 sample) {	return (sample ^ (1 << 31)) >> 24;}//--- convert -----------------------------------------------------------------template<typename T1, typename T2, Endian E1, Endian E2>inline void convert(T1* input, T2* output, int size);template<typename T1, typename T2>inline void convert<T1, T2, LittleEndian, LittleEndian>(T1* input, T2* output, int size) {	for (int i = 0; i < size; ++i) {		*output++ = /*qToLittleEndian*/(compress<T2>(expand<T1>(/*qFromLittleEndian*/(*input++))));	}}template<typename T1, typename T2>inline void convert<T1, T2, BigEndian, BigEndian>(T1* input, T2* output, int size) {	for (int i = 0; i < size; ++i) {		*output++ = /*qToBigEndian*/(compress<T2>(expand<T1>(/*qFromBigEndian*/(*input++))));	}}template<typename T1, typename T2>inline void convert<T1, T2, LittleEndian, BigEndian>(T1* input, T2* output, int size) {	for (int i = 0; i < size; ++i) {		*output++ = /*qToBigEndian*/(compress<T2>(expand<T1>(/*qFromLittleEndian*/(*input++))));	}}template<typename T1, typename T2>inline void convert<T1, T2, BigEndian, LittleEndian>(T1* input, T2* output, int size) {	for (int i = 0; i < size; ++i) {		*output++ = /*qToLittleEndian*/(compress<T2>(expand<T1>(/*qFromBigEndian*/(*input++))));	}}//--- main --------------------------------------------------------------------template<typename T1, typename T2, Endian E1, Endian E2>inline void wrapper(void* input, void* output, int size) {	convert<T1, T2, E1, E2>((T1*)input, (T2*)output, size);}typedef void (*FromAtoB)(void* input, void* output, int size);static FromAtoB fromAtoB[] = {	wrapper<float, float, LittleEndian, LittleEndian>, // F32 -> F32	wrapper<float, qint16, LittleEndian, LittleEndian>, // F32 -> S16LE	wrapper<float, qint16, LittleEndian, BigEndian> // F32 -> S16BLE};int main() {	fromAtoB[0](0, 0, 0);}