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

Export assignment versin

• versin(x: number): number

• Computes the versed sine.

  Notes

  • The versed sine is defined as 1 - cos(x).

  Parameters

  • x: number

    input value (in radians)

  Returns number

  versed sine

  Example

  var v = versin( 0.0 );
  // returns 0.0

  Example

  var v = versin( 3.141592653589793/2.0 );
  // returns ~1.0

  Example

  var v = versin( -3.141592653589793/6.0 );
  // returns ~0.13397

  Example

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