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

Export assignment ldexp

• ldexp(frac: number, exp: number): number

• Multiplies a double-precision floating-point number by an integer power of two.

  Notes

  • If frac equals positive or negative zero, NaN, or positive or negative infinity, the function returns a value equal to frac.

  Parameters

  • frac: number

    fraction

  • exp: number

    exponent

  Returns number

  double-precision floating-point number

  Example

  var x = ldexp( 0.5, 3 ); // => 0.5 * 2^3 = 0.5 * 8
  // returns 4.0

  Example

  var x = ldexp( 4.0, -2 ); // => 4 * 2^(-2) = 4 * (1/4)
  // returns 1.0

  Example

  var x = ldexp( 0.0, 20 );
  // returns 0.0

  Example

  var x = ldexp( -0.0, 39 );
  // returns -0.0

  Example

  var x = ldexp( NaN, -101 );
  // returns NaN

  Example

  var x = ldexp( Infinity, 11 );
  // returns Infinity

  Example

  var x = ldexp( -Infinity, -118 );
  // returns -Infinity