External module "math/base/special/truncb/docs/types/index.d"

Export assignment truncb

• truncb(x: number, n: number, b: number): number

• Rounds a numeric value to the nearest multiple of \(b^n\) toward zero.

  Notes

  • Due to floating-point rounding error, rounding may not be exact.

  Parameters

  • x: number

    input value

  • n: number

    integer power

  • b: number

    base

  Returns number

  rounded value

  Example

  // Round a value to 4 decimal places:
  var v = truncb( 3.141592653589793, -4, 10 );
  // returns 3.1415

  Example

  // If n = 0 or b = 1, `truncb` behaves like `trunc`:
  var v = truncb( 3.141592653589793, 0, 2 );
  // returns 3.0

  Example

  // Round a value to the nearest multiple of two toward zero:
  var v = truncb( 5.0, 1, 2 );
  // returns 4.0