External module "math/base/assert/is-negative-zero/docs/types/index.d"

isNegativeZero

• isNegativeZero(x: number): boolean

• Tests if a double-precision floating-point numeric value is negative zero.

  Parameters

  • x: number

    value to test

  Returns boolean

  boolean indicating whether the value is negative zero

  Example

  var bool = isNegativeZero( -0.0 );
  // returns true

  Example

  var bool = isNegativeZero( 0.0 );
  // returns false