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[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / blas / testblas / dsymv.go

diff --git a/vendor/gonum.org/v1/gonum/blas/testblas/dsymv.go b/vendor/gonum.org/v1/gonum/blas/testblas/dsymv.go
new file mode 100644 (file)
index 0000000..b3fd4ec
--- /dev/null
+++ b/vendor/gonum.org/v1/gonum/blas/testblas/dsymv.go
@@ -0,0 +1,73 @@
+package testblas
+
+import (
+       "testing"
+
+       "gonum.org/v1/gonum/blas"
+       "gonum.org/v1/gonum/floats"
+)
+
+type Dsymver interface {
+       Dsymv(ul blas.Uplo, n int, alpha float64, a []float64, lda int, x []float64, incX int, beta float64, y []float64, incY int)
+}
+
+func DsymvTest(t *testing.T, blasser Dsymver) {
+       for i, test := range []struct {
+               ul    blas.Uplo
+               n     int
+               a     [][]float64
+               x     []float64
+               y     []float64
+               alpha float64
+               beta  float64
+               ans   []float64
+       }{
+               {
+                       ul: blas.Upper,
+                       n:  3,
+                       a: [][]float64{
+                               {5, 6, 7},
+                               {0, 8, 10},
+                               {0, 0, 13},
+                       },
+                       x:     []float64{3, 4, 5},
+                       y:     []float64{6, 7, 8},
+                       alpha: 2.1,
+                       beta:  -3,
+                       ans:   []float64{137.4, 189, 240.6},
+               },
+               {
+                       ul: blas.Lower,
+                       n:  3,
+                       a: [][]float64{
+                               {5, 0, 0},
+                               {6, 8, 0},
+                               {7, 10, 13},
+                       },
+                       x:     []float64{3, 4, 5},
+                       y:     []float64{6, 7, 8},
+                       alpha: 2.1,
+                       beta:  -3,
+                       ans:   []float64{137.4, 189, 240.6},
+               },
+       } {
+               incTest := func(incX, incY, extra int) {
+                       x := makeIncremented(test.x, incX, extra)
+                       y := makeIncremented(test.y, incY, extra)
+                       aFlat := flatten(test.a)
+                       ans := makeIncremented(test.ans, incY, extra)
+
+                       blasser.Dsymv(test.ul, test.n, test.alpha, aFlat, test.n, x, incX, test.beta, y, incY)
+                       if !floats.EqualApprox(ans, y, 1e-14) {
+                               t.Errorf("Case %v, incX=%v, incY=%v: Want %v, got %v.", i, incX, incY, ans, y)
+                       }
+               }
+               incTest(1, 1, 0)
+               incTest(2, 3, 0)
+               incTest(3, 2, 0)
+               incTest(-3, 2, 0)
+               incTest(-2, 4, 0)
+               incTest(2, -1, 0)
+               incTest(-3, -4, 3)
+       }
+}