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

Export assignment trigamma

• trigamma(x: number): number

• Evaluates the trigamma function.

  Parameters

  • x: number

    input value

  Returns number

  function value

  Example

  var v = trigamma( -2.5 );
  // returns ~9.539

  Example

  var v = trigamma( 1.0 );
  // returns ~1.645

  Example

  var v = trigamma( 10.0 );
  // returns ~0.105

  Example

  var v = trigamma( NaN );
  // returns NaN

  Example

  var v = trigamma( -1.0 );
  // returns NaN