Resources Numerical accuracy Calculation policy
Sends each scope line's quantity and unit to the bidding service.
The quantity is the takeoff's 64-bit value, rounded to 4 decimals at the moment it is put in the package. Nothing else is computed here.
Open item. Send the quantity as measured, or state on the package that quantities are rounded to 4 decimals.
2 calculations in 1 source file. The code is read from the released app when this page loads. It is the calculation people run, not a copy kept for this page.
Tests bin/test-takeoffcraft.mjs
Rounds a quantity to 4 decimals before it is sent.
qty = round(v × 10000) ÷ 10000
Math.round(v × 10000) ÷ 10000: the product is rounded to a whole number, an exact half going toward +∞, then divided once. A non-finite value becomes null. The rounded value is what leaves the app.
const money = (v) => (typeof v === 'number' && Number.isFinite(v) ? Math.round(v * 10000) / 10000 : null);Builds the lines of a bid package: item, quantity, unit and sheets.
Each line's quantity passes through the 4-decimal rounding above; the unit and names are copied.
/** The package's lines for the site. sheetLabel(sheetKey) names a sheet. */
export function scopeLines(pkg, sheetLabel = (k) => k) {
return pkg.items.map((x) => ({ key: x.itemId, name: x.name, csi: x.csi || '', qty: money(x.qty), unit: x.unit || '', sheets: x.sheets.map(sheetLabel).join('; ').slice(0, 200) }));
}Every value is a 64-bit number from input to result. Formulas are closed form or a direct solve, and every comparison uses a stated tolerance.