/**
 * High water mark and other on-chain decimal values use the Rust `U80F48`
 * fixed-point representation: a 128-bit unsigned integer whose lower 48 bits
 * encode the fractional part. Convert to a JS `number` by splitting integer
 * and fractional halves before crossing the float boundary, so the integer
 * portion keeps its precision until it actually overflows `Number`.
 */
export const DECIMAL_FRACTIONAL_BITS = 48n;
export const DECIMAL_FRACTIONAL_DIVISOR = 1n << DECIMAL_FRACTIONAL_BITS;

export function convertDecimalBitsToNumber(value: bigint): number {
  const integer = value >> DECIMAL_FRACTIONAL_BITS;
  const frac = value & (DECIMAL_FRACTIONAL_DIVISOR - 1n);
  return Number(integer) + Number(frac) / Number(DECIMAL_FRACTIONAL_DIVISOR);
}