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12748 Discussions

Division and standard library support by NIOSII compiler

Altera_Forum
Honored Contributor II
‎05-12-2010 11:09 AM
1,447 Views

HI, 

 

I have been trying to port an embedded sw to NIOSII. I have some division operations, array initializations, sprintf function calls in the code. I find that NIOS II compiler (processor core does not directly support division) is not providing built-in calls to division, memset/memcpy (as in array initialization, etc) or sprintf. Should the compiler not support these functionalities (mebe not sprintf..). Or am i missing some compiler or linker options..? 

 

Pl send suggestions.. 

 

Thanks, 

Sunil
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Altera_Forum
Honored Contributor II
‎05-12-2010 02:40 PM
497 Views

These items you mention are all supported. Division is emulated if not enabled in core (I believe this to be true but we enabled division). mem and str functions are all definitely present in the NIOS II Libraries. 

 

Bill
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Altera_Forum
Honored Contributor II
‎05-14-2010 05:41 PM
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Nios II supports 32 bit (and less) integer division when enabled and single precision floating point division if you add the custom instruction floating point unit. 

 

The library functions you mentioned are all present.... in string.h, and stdio.h if I remember correctly.
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