On an ARM cortex m0+:
How many cycles does it take to perform multiplication of single precision floats and store them into a float? i.e. x = a*b; Where x, a, and b are single precision IEEE 754 float point... and what if they were both double precision?
Bonus Question: How many cycles does it take to shift an integer by 16 bits and store it into another integer. i.e. x = (y>>16); Where x and y are 32-bit signed integers.
Compiler I will be using is the ARM gcc compiler
The reason I ask this question, is I plan on using q31, but I wanted to see what the difference really would be