`test/modules/powSqrt.js` has never run — `ReferenceError: total is not defined`

Start with test/modules/powSqrt.js and reproduce the ReferenceError using the node command in the issue. Read test/setup.js to understand the available counters and test/test.js to check how modules are listed. Done means powSqrt runs without the undefined variable error, is included in the suite, and its assertions pass.

Summary

test/modules/powSqrt.js cannot execute. It throws before its first assertion,
on a clean checkout of master, on any Node version.

Reproduction

git clone https://github.com/MikeMcl/decimal.js
cd decimal.js
node -e "require('./test/modules/powSqrt.js')"

 Testing pow against sqrt...
ReferenceError: total is not defined
    at .../test/modules/powSqrt.js:12

Cause

Line 12 loops on a free variable:

for (var e, n, p, r, s; total < 10000; ) {

Nothing defines total. test/setup.js keeps its counters as closure variables
inside T — passed and testNumber — and exposes them only afterwards, as
T.result. There is no global of that name, so the comparison throws on the
first evaluation of the loop condition.

test/test.js computes a local total while summing results, which looks like
where the name came from, but that variable is not in scope here and the module
is required in its own right.

Why it went unnoticed

test/test.js lists 60 modules to require, and powSqrt is not among them —
test/modules/ holds 61 files. So npm test never loads it, and the failure
never surfaces.

Why it matters

The module is a genuinely valuable cross-check that is currently doing nothing.
It compares r.pow(0.5) against r.sqrt() for random values, at a random
rounding mode and a random precision in [1, 40], ten thousand times — which
exercises naturalExponential and naturalLogarithm against the independent
Newton-Raphson path in squareRoot. Nothing else in the suite pits those two
implementations against each other.

Suggested fixes

Either would do:

1. Use the harness's own counter. T.result is only set once the module
   finishes, so this needs a live counter — e.g. exposing testNumber from
   setup.js, and looping on that.

2. Loop a fixed number of times, which is what the code appears to intend:

for (var e, n, p, r, s, i = 0; i < 10000; i++) {

Then add 'powSqrt' to the module list in test/test.js so it actually runs.
Be aware it is slow — ten thousand pow(0.5) calls at up to 40 significant
digits.