// Copyright 2010 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Package cmplx provides basic constants and mathematical functions for // complex numbers. Special case handling conforms to the C99 standard // Annex G IEC 60559-compatible complex arithmetic. package cmplx import "math" // Abs returns the absolute value (also called the modulus) of x. func Abs(x complex128) float64 { return math.Hypot(real(x), imag(x)) }