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prove coversion speed

This commit is contained in:
tickduan 2021-07-12 13:32:00 +08:00
parent 60e056a2cb
commit 3031aeb9dd
1 changed files with 28 additions and 42 deletions
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70
deps/SZ/sz/src/ByteToolkit.c vendored
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@ -14,25 +14,12 @@
INLINE int bytesToInt_bigEndian(unsigned char* bytes)
{
int temp = 0;
int res = 0;
res <<= 8;
temp = bytes[0] & 0xff;
res |= temp;
res <<= 8;
temp = bytes[1] & 0xff;
res |= temp;
res <<= 8;
temp = bytes[2] & 0xff;
res |= temp;
res <<= 8;
temp = bytes[3] & 0xff;
res |= temp;
int res;
unsigned char* des = (unsigned char*)&res;
des[0] = bytes[3];
des[1] = bytes[2];
des[2] = bytes[1];
des[3] = bytes[0];
return res;
}
@ -42,20 +29,18 @@ INLINE int bytesToInt_bigEndian(unsigned char* bytes)
* */
INLINE void intToBytes_bigEndian(unsigned char *b, unsigned int num)
{
b[0] = (unsigned char)(num >> 24);
b[1] = (unsigned char)(num >> 16);
b[2] = (unsigned char)(num >> 8);
b[3] = (unsigned char)(num);
//note: num >> xxx already considered endian_type...
//if(dataEndianType==LITTLE_ENDIAN_DATA)
// symTransform_4bytes(*b); //change to BIG_ENDIAN_DATA
unsigned char* sou =(unsigned char*)&num;
b[0] = sou[3];
b[1] = sou[2];
b[2] = sou[1];
b[3] = sou[0];
}
/**
* @endianType: refers to the endian_type of unsigned char* b.
* */
INLINE long bytesToLong_bigEndian(unsigned char* b) {
long temp = 0;
long res = 0;
@ -92,25 +77,29 @@ INLINE long bytesToLong_bigEndian(unsigned char* b) {
res |= temp;
return res;
}
INLINE void longToBytes_bigEndian(unsigned char *b, unsigned long num)
INLINE void longToBytes_bigEndian(unsigned char *b, long num)
{
// arm32
unsigned char* sou = (unsigned char*)&num;
#if defined(_TD_LINUX_64) || defined(_TD_ARM_64) || defined(_TD_DARWIN_64)
b[0] = (unsigned char)(num>>56);
b[1] = (unsigned char)(num>>48);
b[2] = (unsigned char)(num>>40);
b[3] = (unsigned char)(num>>32);
// 8 bytes
b[7] = sou[0];
b[6] = sou[1];
b[5] = sou[2];
b[4] = sou[3];
b[3] = sou[4];
b[2] = sou[5];
b[1] = sou[6];
b[0] = sou[7];
#else
memset(b, 0, 4);
b[7] = sou[0];
b[6] = sou[1];
b[5] = sou[2];
b[4] = sou[3];
#endif
b[4] = (unsigned char)(num>>24);
b[5] = (unsigned char)(num>>16);
b[6] = (unsigned char)(num>>8);
b[7] = (unsigned char)(num);
// if(dataEndianType==LITTLE_ENDIAN_DATA)
// symTransform_8bytes(*b);
}
//TODO: debug: lfBuf.lvalue could be actually little_endian....
@ -135,9 +124,6 @@ INLINE short getPrecisionReqLength_float(float precision)
int expValue = (ivalue & 0x7F800000) >> 23;
expValue -= 127;
// unsigned char the1stManBit = (unsigned char)((ivalue & 0x00400000) >> 22);
// if(the1stManBit==1)
// expValue--;
return (short)expValue;
}