profuse/Endian/Endian.cpp

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#include <Endian/Endian.h>
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;
}
}