libgo/go/cmath/abs.go

   1 // Copyright 2010 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // The cmath package provides basic constants
   6 // and mathematical functions for complex numbers.
   7 package cmath
   8
   9 import "math"
  10
  11 // Abs returns the absolute value (also called the modulus) of x.
  12 func Abs(x complex128) float64 { return math.Hypot(real(x), imag(x)) }