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

Export assignment havercos

• havercos(x: number): number

• Computes the half-value versed cosine.

  Parameters

  • x: number

    input value (in radians)

  Returns number

  half-value versed cosine

  Example

  var v = havercos( 0.0 );
  // returns 1.0

  Example

  var v = havercos( 3.141592653589793/2.0 );
  // returns 0.5

  Example

  var v = havercos( -3.141592653589793/6.0 );
  // returns ~0.9330

  Example

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