@0xtorch/big-decimal/_esm/fix.js

An arbitrary precision Decimal type for TypeScript that extends BigInt.

import { removeTrailingZeros } from './removeTrailingZeros';
export const fix = ({ value, decimals }, fixDecimals, rounding) => {
    if (decimals <= fixDecimals) {
        return removeTrailingZeros({ value, decimals });
    }
    const fixPlusOneValue = value / 10n ** BigInt(decimals - fixDecimals - 1);
    const fixValue = round(fixPlusOneValue, rounding);
    return removeTrailingZeros({
        value: fixValue,
        decimals: fixDecimals,
    });
};
const round = (value, rounding) => {
    switch (rounding) {
        case 'ceil': {
            if (value < 0n) {
                return (value - 9n) / 10n;
            }
            return (value + 9n) / 10n;
        }
        case 'floor': {
            return value / 10n;
        }
        case 'round': {
            if (value < 0n) {
                return (value - 5n) / 10n;
            }
            return (value + 5n) / 10n;
        }
    }
};
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