For bessel function:
Relative error:
Within 1% in first 7.2ms
Within 5% in first 21ms
Wthin 15% in first 30.1ms
Within 25% in first 59.4ms
Absolute error:
Wthin 0.01 in first 38.7ms
Wthin 0.015 in first 59.6ms
After about 60ms, it'll explode into chaos
For sinc function:
Relative error:
Within 1% in first 5.7ms
Within 5% in first 12.2ms
Within 15% in first 21.2ms
Within 25% in first 27.2ms
Absolute error:
Within 0.1% in first 19.2ms
Within 0.5% in first 65.1ms
Within 1% in first 82.7ms
Have a period of 100ms