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Diffstat (limited to 'libgo/go/cmath/phase.go')
| -rw-r--r-- | libgo/go/cmath/phase.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libgo/go/cmath/phase.go b/libgo/go/cmath/phase.go new file mode 100644 index 000000000..2d67aa34c --- /dev/null +++ b/libgo/go/cmath/phase.go @@ -0,0 +1,11 @@ +// 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 cmath + +import "math" + +// Phase returns the phase (also called the argument) of x. +// The returned value is in the range [-Pi, Pi]. +func Phase(x complex128) float64 { return math.Atan2(imag(x), real(x)) } |