`num-error`

Subject: SQRT
Category: error-code
Formula: =SQRT(-1)
Canonical: #NUM!

Per-engine results

matches canonical diverges no fixture

Engine	Verdict	Value
gsheets	match	[object Object]
excel	match	[object Object]
lattice	match	#NUM!
ironcalc	match	#NUM!
hyperformula	match	#NUM!
libreoffice	diverge	—
formulas	match	#NUM!
pycel	diverge	#NAME?