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

Export assignment betaln

• betaln(a: number, b: number): number

• Evaluate the natural logarithm of the beta function.

  Parameters

  • a: number

    first input value

  • b: number

    second input value

  Returns number

  natural logarithm of beta function

  Example

  var v = betaln( 0.0, 0.0 );
  // returns Infinity

  Example

  var v = betaln( 1.0, 1.0 );
  // returns 0.0

  Example

  var v = betaln( -1.0, 2.0 );
  // returns NaN

  Example

  var v = betaln( 5.0, 0.2 );
  // returns ~1.218

  Example

  var v = betaln( 4.0, 1.0 );
  // returns ~-1.386

  Example

  var v = betaln( NaN, 2.0 );
  // returns NaN