github.com/gopherd/gonum@v0.0.4/internal/cmplx64/isinf.go (about)

     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  // Copyright ©2017 The Gonum Authors. All rights reserved.
     6  // Use of this source code is governed by a BSD-style
     7  // license that can be found in the LICENSE file.
     8  
     9  package cmplx64
    10  
    11  import math "github.com/gopherd/gonum/internal/math32"
    12  
    13  // IsInf returns true if either real(x) or imag(x) is an infinity.
    14  func IsInf(x complex64) bool {
    15  	if math.IsInf(real(x), 0) || math.IsInf(imag(x), 0) {
    16  		return true
    17  	}
    18  	return false
    19  }
    20  
    21  // Inf returns a complex infinity, complex(+Inf, +Inf).
    22  func Inf() complex64 {
    23  	inf := math.Inf(1)
    24  	return complex(inf, inf)
    25  }