hard20 pts · first answer countsembedded-cperformance
Slow maths on a Cortex-M4F
On a Cortex-M4F with a single-precision FPU, this filter is ten times slower than expected. Why?
float y, x; y = y * 0.9 + x * 0.1;
On a Cortex-M4F with a single-precision FPU, this filter is ten times slower than expected. Why?
float y, x; y = y * 0.9 + x * 0.1;