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Why the CMSIS DSP Matrix Multiplication outputs 0 after few iterations?

Question asked by Shreyas Waichal on Jul 31, 2019
Latest reply on Aug 14, 2019 by soledad


I am using the CMSIS DSP library for multiplying two matrices on the keil mcb 1800 board using MCU Xpresso IDE. I am using the external SDRAM of 16 MB for storing the result.


Matrix "xmat" is 1604*8 and omega_transpose is of size 8*100.....Thus the resulting matrix is of size 1604*100.


I am printing the resulting matrix. I am also printing the row number each time and I find that at 65599 the result becomes 0.00000.


Can someone tell me why this is happening and how to solve it?


Please find attached the screenshot of the error and the code (test3.c).