C64x IQmath

Important Note:

The software found on this site is available for download, but is no longer being actively developed. This wiki is in maintenance mode and the software is supported on C6000 DSP E2E forum

The C64x+ IQmath is available in the TI website. This IQmath is compatible with the C64x+ core (present in the processor like C6455 and C6424), but not compatible with the C64x core (present in the processor like C6416 and C6414).

There were several customer requests and forum posts like this one asking for an IQmath compatible with the C64x core, that is not as advanced as the C64x+ core.

So, here it is: IQmathC64xrelease.lib.

This version was not extensivelly tested so it is provided "AS IS".

It should work simlarly to the C64x+ Iqmath, so please refer to the documentation for that one. The IQmathC64xrelease.lib is equivalent to the files IQmath_c64x+.lib and IQmath_RAM_c64x+.lib, so you will still need to download the C64x+ Iqmath to get the header files.

As a side note, one of the steps to remove the incompatibility was to add C optimized versions of the C64x+ intrinsics (_mpy32ll, _mpy32su, _mpy32us, _mpy32u, _mpy32, _dmv) to the library code.

For information about calling IQmath functions from linear assembly, please see this forum post.