Texas Instruments TMS320C64X Programmer's Reference Manual page 149

Performance/Fractional Q Formats
This appendix describes performance considerations related to the C64x+
DSPLIB and provides information about the Q format used by DSPLIB
functions.
Topic
A.1 Performance Considerations
A.2 Fractional Q Formats
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Appendix A
Appendix A
Page
A-2
A-3
A-1