The results of ippsCopyLE_1u and ippsCopyBE_1u are same

[sun_c_]

As the doc says(https://software.intel.com/en-us/node/502043),ippsCopyLE_1u and ippsCopyBE is diffierent.

do a small test used IPP2017

Ipp8u a = 1;//  00000001  high bit->low bit
 Ipp8u aBE = 0, aLE = 0;
 ippsCopyBE_1u(&a, 0, &aBE, 0, 8);
 ippsCopyLE_1u(&a, 0, &aLE, 0, 8);

The result is aBE=1,aLE=1

Should aLE be 128? // 10000000  high bit->low bit

Thanks.

[Ivan_Z_Intel]

Thanks for your feedback.

The order of bits in source and in destination are the same. So the function results in your example are identical.
You can see different results for such example

ippsCopyBE_1u(&a, 0, &aBE, 0, 7);
 ippsCopyLE_1u(&a, 0, &aLE, 0, 7);

[sun_c_]

IVAN Z. (Intel) wrote:

Thanks for your feedback.

The order of bits in source and in destination are the same. So the function results in your example are identical.
You can see different results for such example

ippsCopyBE_1u(&a, 0, &aBE, 0, 7);
 ippsCopyLE_1u(&a, 0, &aLE, 0, 7);

Thanks.The order of bits in source and in destination are the same.