##### Ninja Library - Mathematical Function

# njInvertSqrt

Returns the inverse square root

### FORMAT

`

  Float njInvertSqrt( n )
  Float n

`

### PARAMETER

  `n` | Arbitrary real number

### RETURN

  Inverse square root

### DESCRIPTION

  Determines the inverse square root (1/square root) of arbitrary real number n and returns the value found as the result.

### EXAMPLE

      ans = njInvertSqrt( -3.14159265f );
      % Result %
      ans = -0.564190

### NOTE

  If arbitrary real number n is negative, the negative value of the inverse square root of the absolute value of n is returned.

### REFERENCE

  `njSqrt()
  `

njInvertSqrt

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