External module "math/base/special/cosm1/docs/types/index.d"

Export assignment cosm1

• cosm1(x: number): number

• Computes the cosine of a number minus one.

  Parameters

  • x: number

    input value (in radians)

  Returns number

  cosine minus one

  Example

  var v = cosm1( 0.0 );
  // returns 0.0

  Example

  var v = cosm1( 3.141592653589793/4.0 );
  // returns ~-0.293

  Example

  var v = cosm1( -3.141592653589793/6.0 );
  // returns ~-0.134

  Example

  var v = cosm1( NaN );
  // returns NaN