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Change NewDense signature and behaviour

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This is an API breaking change.

NewDense now panics if len(mat) != r*c, unless mat == nil. When mat is
nil a new, correctly sized slice is allocated.
This commit is contained in:
kortschak
2014-01-08 09:56:39 +10:30
parent fadcd6dd7f
commit b10f3a00f3
13 changed files with 87 additions and 112 deletions
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28
mat64/svd_test.go
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@@ -25,47 +25,47 @@ func (s *S) TestSVD(c *check.C) {
v *Dense
}{
{
a: mustDense(NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0})),
a: NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0}),
epsilon: math.Pow(2, -52.0),
small: math.Pow(2, -966.0),
wantu: true,
u: mustDense(NewDense(4, 2, []float64{
u: NewDense(4, 2, []float64{
0.8174155604703632, -0.5760484367663209,
0.5760484367663209, 0.8174155604703633,
0, 0,
0, 0,
})),
}),
sigma: []float64{5.464985704219041, 0.365966190626258},
wantv: true,
v: mustDense(NewDense(2, 2, []float64{
v: NewDense(2, 2, []float64{
0.4045535848337571, -0.9145142956773044,
0.9145142956773044, 0.4045535848337571,
})),
}),
},
{
a: mustDense(NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0})),
a: NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0}),
epsilon: math.Pow(2, -52.0),
small: math.Pow(2, -966.0),
wantu: true,
u: mustDense(NewDense(4, 2, []float64{
u: NewDense(4, 2, []float64{
0.8174155604703632, -0.5760484367663209,
0.5760484367663209, 0.8174155604703633,
0, 0,
0, 0,
})),
}),
sigma: []float64{5.464985704219041, 0.365966190626258},
wantv: false,
},
{
a: mustDense(NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0})),
a: NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0}),
epsilon: math.Pow(2, -52.0),
small: math.Pow(2, -966.0),
@@ -75,13 +75,13 @@ func (s *S) TestSVD(c *check.C) {
sigma: []float64{5.464985704219041, 0.365966190626258},
wantv: true,
v: mustDense(NewDense(2, 2, []float64{
v: NewDense(2, 2, []float64{
0.4045535848337571, -0.9145142956773044,
0.9145142956773044, 0.4045535848337571,
})),
}),
},
{
a: mustDense(NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0})),
a: NewDense(4, 2, []float64{2, 4, 1, 3, 0, 0, 0, 0}),
epsilon: math.Pow(2, -52.0),
small: math.Pow(2, -966.0),
@@ -95,11 +95,11 @@ func (s *S) TestSVD(c *check.C) {
// forcing a to be a tall or square matrix.
//
// This is a failing case to use to fix that bug.
a: mustDense(NewDense(3, 11, []float64{
a: NewDense(3, 11, []float64{
1, 1, 0, 1, 0, 0, 0, 0, 0, 11, 1,
1, 0, 0, 0, 0, 0, 1, 0, 0, 12, 2,
1, 1, 0, 0, 0, 0, 0, 0, 1, 13, 3,
})),
}),
epsilon: math.Pow(2, -52.0),
small: math.Pow(2, -966.0),