This is a test of `(sqrt -1)`

to determine various issues: does the value become inexact, and if we don't have complex numbers, do we get an error or a NaN?

Returns exact `+i`

: Racket, MIT, Gambit, Chibi, Chez, Vicare, Ypsilon, Mosh, IronScheme, STklos, Spark, Owl Lisp, Sagittarius

Return inexact `0.0+1.0i`

: Gauche, Chicken (with the numbers egg), Scheme48/scsh, Guile, Kawa, SISC, SCM, Larceny, KSi, S7, UMB, Foment

Returns `+nan.0`

: Chicken (without the numbers egg), NexJ, JScheme, RScheme, BDC, VX, Inlab, Picrin

Signals an error: Bigloo, Ikarus, Scheme 9, XLisp, Rep, Schemik, Elk, SXM, Sizzle, Dfsch

`sqrt`

is undefined: SigScheme, Shoe, TinyScheme, Llava, Oaklisp, FemtoLisp

Dream hangs.

A further test of `(sqrt -1.0)`

produces `0.0+1.0i`

, `+nan.0`

, or an error consistently with the above.