Template

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-1${exp},-1${exp} 2${exp} 2${exp}" > <circle r=".5${exp}" stroke-width="1${exp}" pathlength="4" stroke-dasharray="1,1" stroke="currentcolor" fill="none"></circle> </svg>

Legend:

black area
what is rendered
green area
approximation of where given browser "thinks" it is rendered

Playground (source)

https://myfonj.github.io/tst/SVG-decimal-precision.html

Outcomes (results)

${exp} Gecko Blink WebKit
e+10 (Freeze)
e+9
e+8
e+7
e+6
e+5
e+4
e+3
e+2
e+1
e+0
e-1
e-2
e-3
e-4
e-5
e-6
e-7