Questions tagged [fixed-point]

A number with a fixed number of digits before or after an implied decimal point. It contrasts with the floating point number representation. Often used in place of floating point numbers if hardware floating point unit is not present.

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Range of unsigned fixed point division in VHDL

I was thinking about the range a result signal should have to acommodate an unsigned fixed point division. Suppose we have: SIGNAL a : UFIXED (3 DOWNTO -3); SIGNAL b : UFIXED (4 DOWNTO -2); am I ...
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RFFT on 8192 samples in Q15 with CMSIS

I need to perform an FFT on a block of 8192 samples on an STM32F446 microcontroller. For that I wanted to use the CMSIS DSP library as it's available easily and optimised for the STM32F4. My 8192 ...
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Pulse generator in Simulink Matlab

I want to generate a pulse in Matlab Simulink fixed point solver. The step size in the Simulink fixed solver is 1e-06, but I need a pulse width of 2e-08. The figure shows the clear requirement of ...