Merge pull request #5 from Antidote/inline-bswap

inlined byte-swapping utilities
This commit is contained in:
Jack Andersen 2015-04-10 18:23:35 -10:00
commit cb67bfdaf1
2 changed files with 175 additions and 241 deletions

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@ -20,6 +20,7 @@
#include <string>
#include <vector>
#include <stdarg.h>
#include <string.h>
#include "Athena/Global.hpp"
#include "Athena/Types.hpp"
@ -27,35 +28,181 @@ namespace Athena
{
namespace utility
{
bool isEmpty(atInt8*, atUint32);
atUint16 swapU16(atUint16 val );
atInt16 swap16 (atInt16 val );
atUint32 swapU32(atUint32 val);
atInt32 swap32 (atInt32 val );
atUint64 swapU64(atUint64 val);
atInt64 swap64 (atInt64 val);
float swapFloat(float val);
double swapDouble(double val);
atInt16 LittleInt16(atInt16& val);
atUint16 LittleUint16(atUint16& val);
atInt16 BigInt16(atInt16& val);
atUint16 BigUint16(atUint16& val);
atInt32 LittleInt32(atInt32& val);
atUint32 LittleUint32(atUint32& val);
atInt32 BigInt32(atInt32& val);
atUint32 BigUint32(atUint32& val);
atInt64 LittleInt64(atInt64& val);
atUint64 LittleUint64(atUint64& val);
atInt64 BigInt64(atInt64& val);
atUint64 BigUint64(atUint64& val);
float LittleFloat(float& val);
float BigFloat(float& val);
double LittleDouble(double& val);
double BigDouble(double& val);
inline bool isEmpty(atInt8* buf, atUint32 size) {return !memcmp(buf, buf + 1, size - 1);}
bool isSystemBigEndian();
inline atInt16 swap16 (atInt16 val)
{
#if __GNUC__
return __builtin_bswap16(val);
#elif _WIN32
return _byteswap_ushort(val);
#else
return (val = (val << 8) | ((val >> 8) & 0xFF));
#endif
}
inline atUint16 swapU16(atUint16 val) {return (atUint16)swap16(val);}
inline atInt32 swap32 (atInt32 val)
{
#if __GNUC__
return __builtin_bswap32(val);
#elif _WIN32
return _byteswap_ulong(val);
#else
val = (val & 0x0000FFFF) << 16 | (val & 0xFFFF0000) >> 16;
val = (val & 0x00FF00FF) << 8 | (val & 0xFF00FF00) >> 8;
return val;
#endif
}
inline atUint32 swapU32(atUint32 val) {return (atUint32)swap32(val);}
inline atInt64 swap64 (atInt64 val)
{
#if __GNUC__
return __builtin_bswap64(val);
#elif _WIN32
return _byteswap_uint64(val);
#else
return (val = ((atInt64)((((atInt64)(val) & 0xFF00000000000000ULL) >> 56) |
(((atInt64)(val) & 0x00FF000000000000ULL) >> 40) |
(((atInt64)(val) & 0x0000FF0000000000ULL) >> 24) |
(((atInt64)(val) & 0x000000FF00000000ULL) >> 8) |
(((atInt64)(val) & 0x00000000FF000000ULL) << 8) |
(((atInt64)(val) & 0x0000000000FF0000ULL) << 24) |
(((atInt64)(val) & 0x000000000000FF00ULL) << 40) |
(((atInt64)(val) & 0x00000000000000FFULL) << 56))));
#endif
}
inline atUint64 swapU64(atUint64 val) {return (atUint64)swap64(val);}
inline float swapFloat(float val)
{
atInt32 ival = swap32(*((atInt32*)(&val)));
return *((float*)(&ival));
}
inline double swapDouble(double val)
{
atInt64 ival = swap64(*((atInt64*)(&val)));
return *((double*)(&ival));
}
inline atInt16 LittleInt16(atInt16& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap16(val);
return val;
}
inline atUint16 LittleUint16(atUint16& val)
{
atInt16 ret = val;
LittleInt16(ret);
val = ret;
return val;
}
inline atInt16 BigInt16(atInt16& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap16(val);
return val;
}
inline atUint16 BigUint16(atUint16& val)
{
atInt16 ret = val;
BigInt16(ret);
val = ret;
return val;
}
inline atInt32 LittleInt32(atInt32& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap32(val);
return val;
}
inline atUint32 LittleUint32(atUint32& val)
{
atInt32 ret = val;
LittleInt32(ret);
val = ret;
return val;
}
inline atInt32 BigInt32(atInt32& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap32(val);
return val;
}
inline atUint32 BigUint32(atUint32& val)
{
atInt32 ret = val;
BigInt32(ret);
val = ret;
return val;
}
inline atInt64 LittleInt64(atInt64& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap64(val);
return val;
}
inline atUint64 LittleUint64(atUint64& val)
{
atInt64 ret = val;
LittleInt64(ret);
val = ret;
return val;
}
inline atInt64 BigInt64(atInt64& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap64(val);
return val;
}
inline atUint64 BigUint64(atUint64& val)
{
atInt64 ret = val;
BigInt64(ret);
val = ret;
return val;
}
inline float LittleFloat(float& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swapFloat(val);
return val;
}
inline float BigFloat(float& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swapFloat(val);
return val;
}
inline double LittleDouble(double& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swapDouble(val);
return val;
}
inline double BigDouble(double& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swapDouble(val);
return val;
}
void fillRandom(atUint8 * rndArea, atUint64 count);
std::vector<std::string> split(const std::string &s, char delim);
std::string join(const std::vector<std::string>& elems, const std::string& delims);

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@ -34,49 +34,6 @@ namespace Athena
{
namespace utility
{
bool isEmpty(atInt8* buf, atUint32 size)
{
return !memcmp(buf, buf + 1, size - 1);
}
atUint16 swapU16(atUint16 val )
{
return (atUint16)swap16(val);
}
atInt16 swap16(atInt16 val )
{
return (val = (val << 8) | ((val >> 8) & 0xFF));
}
atUint32 swapU32(atUint32 val)
{
return (atUint32)swap32(val);
}
int swap32(atInt32 val )
{
val = (val & 0x0000FFFF) << 16 | (val & 0xFFFF0000) >> 16;
val = (val & 0x00FF00FF) << 8 | (val & 0xFF00FF00) >> 8;
return val;
}
atUint64 swapU64(atUint64 val)
{
return (atUint64)swap64(val);
}
atInt64 swap64(atInt64 val)
{
return (val = ((atInt64)((((atInt64)(val) & 0xFF00000000000000ULL) >> 56) |
(((atInt64)(val) & 0x00FF000000000000ULL) >> 40) |
(((atInt64)(val) & 0x0000FF0000000000ULL) >> 24) |
(((atInt64)(val) & 0x000000FF00000000ULL) >> 8) |
(((atInt64)(val) & 0x00000000FF000000ULL) << 8) |
(((atInt64)(val) & 0x0000000000FF0000ULL) << 24) |
(((atInt64)(val) & 0x000000000000FF00ULL) << 40) |
(((atInt64)(val) & 0x00000000000000FFULL) << 56))));
}
bool isSystemBigEndian()
{
@ -84,182 +41,12 @@ bool isSystemBigEndian()
return (*(atUint16*)test == 0xFEFF);
}
atInt16 LittleInt16(atInt16& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap16(val);
return val;
}
atUint16 LittleUint16(atUint16& val)
{
atInt16 ret = val;
LittleInt16(ret);
val = ret;
return val;
}
atInt16 BigInt16(atInt16& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap16(val);
return val;
}
atUint16 BigUint16(atUint16& val)
{
atInt16 ret = val;
BigInt16(ret);
val = ret;
return val;
}
atInt32 LittleInt32(atInt32& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap32(val);
return val;
}
atUint32 LittleUint32(atUint32& val)
{
atInt32 ret = val;
LittleInt32(ret);
val = ret;
return val;
}
atInt32 BigInt32(atInt32& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap32(val);
return val;
}
atUint32 BigUint32(atUint32& val)
{
atInt32 ret = val;
BigInt32(ret);
val = ret;
return val;
}
atInt64 LittleInt64(atInt64& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swap64(val);
return val;
}
atUint64 LittleUint64(atUint64& val)
{
atInt64 ret = val;
LittleInt64(ret);
val = ret;
return val;
}
atInt64 BigInt64(atInt64& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swap64(val);
return val;
}
atUint64 BigUint64(atUint64& val)
{
atInt64 ret = val;
BigInt64(ret);
val = ret;
return val;
}
float LittleFloat(float& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swapFloat(val);
return val;
}
float BigFloat(float& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swapFloat(val);
return val;
}
double LittleDouble(double& val)
{
if (Athena::utility::isSystemBigEndian())
val = Athena::utility::swapDouble(val);
return val;
}
double BigDouble(double& val)
{
if (!Athena::utility::isSystemBigEndian())
val = Athena::utility::swapDouble(val);
return val;
}
void fillRandom(atUint8 * rndArea, atUint64 count)
{
for(atUint64 i = 0; i < count; i++)
rndArea[i]=rand();
}
float swapFloat(float val)
{
float retVal;
char* convFloat = (char*) &val;
char* retFloat = (char*) &retVal;
retFloat[0] = convFloat[3];
retFloat[1] = convFloat[2];
retFloat[2] = convFloat[1];
retFloat[3] = convFloat[0];
return retVal;
}
double swapDouble(double val)
{
double retVal;
char* convFloat = (char*) &val;
char* retFloat = (char*) &retVal;
retFloat[0] = convFloat[7];
retFloat[1] = convFloat[6];
retFloat[2] = convFloat[5];
retFloat[3] = convFloat[4];
retFloat[4] = convFloat[3];
retFloat[5] = convFloat[2];
retFloat[6] = convFloat[1];
retFloat[7] = convFloat[0];
return (double)((atUint64)retVal);
}
std::vector<std::string> &split(const std::string &s, char delim, std::vector<std::string> &elems)
{
std::stringstream ss(s);