`acos-negative`

Subject: ACOS
Category: value
Formula: =ACOS(-1)
Canonical: —

Per-engine results

matches canonical diverges no fixture

Engine	Verdict	Value
gsheets	diverge	[object Object]
excel	diverge	[object Object]
lattice	diverge	3.14159
ironcalc	diverge	3.141592654
hyperformula	diverge	3.1415926536
libreoffice	match	—
formulas	diverge	3.14159
pycel	diverge	#NAME?