#include namespace LittleEndian { uint16_t Read16(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return p[0] | (p[1] << 8); } uint32_t Read24(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return (p[0]) | (p[1] << 8) | (p[2] << 16); } uint32_t Read32(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return (p[0]) | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); } void Write16(void *vp, uint16_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x) & 0xff; p[1] = (x >> 8) & 0xff; } void Write24(void *vp, uint32_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x) & 0xff; p[1] = (x >> 8) & 0xff; p[2] = (x >> 16) & 0xff; } void Write32(void *vp, uint32_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x) & 0xff; p[1] = (x >> 8) & 0xff; p[2] = (x >> 16) & 0xff; p[3] = (x >> 24) & 0xff; } } namespace BigEndian { uint16_t Read16(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return (p[0] << 8) | (p[1]); } uint32_t Read24(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return (p[0] << 16) | (p[1] << 8) | (p[2]); } uint32_t Read32(const void *vp) { const uint8_t *p = (const uint8_t *)vp; return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]); } void Write16(void *vp, uint16_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x >> 8) & 0xff; p[1] = (x) & 0xff; } void Write24(void *vp, uint32_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x >> 16) & 0xff; p[1] = (x >> 8) & 0xff; p[2] = (x) & 0xff; } void Write32(void *vp, uint32_t x) { uint8_t *p = (uint8_t *)vp; p[0] = (x >> 24) & 0xff; p[1] = (x >> 16) & 0xff; p[2] = (x >> 8) & 0xff; p[3] = (x) & 0xff; } }