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// Package cmplx provides basic constants and mathematical functions for 6// complex numbers. Special case handling conforms to the C99 standard 7// Annex G IEC 60559-compatible complex arithmetic. 8package cmplx 9 10import "math" 11 12// Abs returns the absolute value (also called the modulus) of x. 13func Abs(x complex128) float64 { return math.Hypot(real(x), imag(x)) } 14