Where is source code for memcpy?

Hi,

I am writing the C674x DSP code for a DM816x.  We're using sysbios 6.32.05.54, and CCS 5.1.0.09000.

We are investigating some behavior related to "memcpy". The only definition for this that I can find is in the string.h header file: C:\CCStudio_v5.1\ccsv5\tools\compiler\c6000\include\string.h

_CODE_ACCESS void   *memcpy(void *_s1, const void *_s2, size_t _n);

Where is the actual source code showing how memcpy works?

Thanks,
Annie