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RTOS/TMS320C6748: Sys_BIOS_Cos_Log_functionality

Part Number: TMS320C6748


Tool/software: TI-RTOS

cos and sin functions , log10 function used in the code.currently code hangs at log10 function . Same is the case for cos function execution as well.  

Are there any setting in SYS bios 6.46 because all these functions worked on DSP bios as is ? 

for eg for Log10 function , code from ti\ccsv6\tools\compiler\ti-cgt-c6000_8.1.1\lib\src\log10.c

below code executes and then in this file log10f_i.h code hangs .
_CODE_ACCESS double log10(double x)
{
#include "log10f_i.h"
}

please suggest .

Thanks
Manisha