github.com/gopherd/gonum@v0.0.4/blas/testblas/zhpr2.go (about)

     1  // Copyright ©2017 The Gonum 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 testblas
     6  
     7  import (
     8  	"testing"
     9  
    10  	"github.com/gopherd/gonum/blas"
    11  )
    12  
    13  type Zhpr2er interface {
    14  	Zhpr2(uplo blas.Uplo, n int, alpha complex128, x []complex128, incX int, y []complex128, incY int, ap []complex128)
    15  }
    16  
    17  func Zhpr2Test(t *testing.T, impl Zhpr2er) {
    18  	for tc, test := range zher2TestCases {
    19  		n := len(test.x)
    20  		incX := test.incX
    21  		incY := test.incY
    22  		for _, uplo := range []blas.Uplo{blas.Upper, blas.Lower} {
    23  			x := makeZVector(test.x, incX)
    24  			xCopy := make([]complex128, len(x))
    25  			copy(xCopy, x)
    26  
    27  			y := makeZVector(test.y, incY)
    28  			yCopy := make([]complex128, len(y))
    29  			copy(yCopy, y)
    30  
    31  			ap := zPack(uplo, n, test.a, n)
    32  			impl.Zhpr2(uplo, n, test.alpha, x, incX, y, incY, ap)
    33  			a := zUnpackAsHermitian(uplo, n, ap)
    34  
    35  			if !zsame(x, xCopy) {
    36  				t.Errorf("Case %v (uplo=%v,incX=%v,incY=%v): unexpected modification of x", tc, uplo, incX, incY)
    37  			}
    38  			if !zsame(y, yCopy) {
    39  				t.Errorf("Case %v (uplo=%v,incX=%v,incY=%v): unexpected modification of y", tc, uplo, incX, incY)
    40  			}
    41  			if !zsame(test.want, a) {
    42  				t.Errorf("Case %v (uplo=%v,incX=%v,incY=%v): unexpected result\nwant: %v\ngot:  %v", tc, uplo, incX, incY, test.want, a)
    43  			}
    44  		}
    45  	}
    46  }