Merge develop

.gitignore

@@ -1,2 +1,4 @@
 test_data/
 .coverage.out
+
+sample_models/.env

ops/opset13/acosh.go

@@ -0,0 +1,75 @@
+package opset13
+
+import (
+	"math"
+
+	"github.com/advancedclimatesystems/gonnx/onnx"
+	"github.com/advancedclimatesystems/gonnx/ops"
+	"gorgonia.org/tensor"
+)
+
+// Acosh represents the ONNX acosh operator.
+type Acosh struct{}
+
+// newAcosh creates a new acosh operator.
+func newAcosh() ops.Operator {
+	return &Acosh{}
+}
+
+// Init initializes the acosh operator.
+func (c *Acosh) Init(_ []*onnx.AttributeProto) error {
+	return nil
+}
+
+// Apply applies the acosh operator.
+func (c *Acosh) Apply(inputs []tensor.Tensor) ([]tensor.Tensor, error) {
+	var (
+		out tensor.Tensor
+		err error
+	)
+
+	switch inputs[0].Dtype() {
+	case tensor.Float32:
+		out, err = inputs[0].Apply(acosh[float32])
+	case tensor.Float64:
+		out, err = inputs[0].Apply(acosh[float64])
+	default:
+		return nil, ops.ErrInvalidInputType(0, inputs[0].Dtype().String(), c)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return []tensor.Tensor{out}, nil
+}
+
+// ValidateInputs validates the inputs that will be given to Apply for this operator.
+func (c *Acosh) ValidateInputs(inputs []tensor.Tensor) ([]tensor.Tensor, error) {
+	return ops.ValidateInputs(c, inputs)
+}
+
+// GetMinInputs returns the minimum number of input tensors this operator expects.
+func (c *Acosh) GetMinInputs() int {
+	return 1
+}
+
+// GetMaxInputs returns the maximum number of input tensors this operator expects.
+func (c *Acosh) GetMaxInputs() int {
+	return 1
+}
+
+// GetInputTypeConstraints returns a list. Every element represents a set of allowed tensor dtypes
+// for the corresponding input tensor.
+func (c *Acosh) GetInputTypeConstraints() [][]tensor.Dtype {
+	return [][]tensor.Dtype{{tensor.Float32, tensor.Float64}}
+}
+
+// String implements the stringer interface, and can be used to format errors or messages.
+func (c *Acosh) String() string {
+	return "acosh operator"
+}
+
+func acosh[T ops.FloatType](x T) T {
+	return T(math.Acosh(float64(x)))
+}

ops/opset13/acosh_test.go

@@ -0,0 +1,99 @@
+package opset13
+
+import (
+	"testing"
+
+	"github.com/advancedclimatesystems/gonnx/ops"
+	"github.com/stretchr/testify/assert"
+	"gorgonia.org/tensor"
+)
+
+func TestAcoshInit(t *testing.T) {
+	c := &Acosh{}
+
+	// since 'acosh' does not have any attributes we pass in nil. This should not
+	// fail initializing the acosh.
+	err := c.Init(nil)
+	assert.Nil(t, err)
+}
+
+func TestAcosh(t *testing.T) {
+	tests := []struct {
+		acosh    *Acosh
+		backing  []float32
+		shape    []int
+		expected []float32
+	}{
+		{
+			&Acosh{},
+			[]float32{1, 2, 3, 4},
+			[]int{2, 2},
+			[]float32{0, 1.316958, 1.7627472, 2.063437},
+		},
+		{
+			&Acosh{},
+			[]float32{1, 2, 3, 4},
+			[]int{1, 4},
+			[]float32{0, 1.316958, 1.7627472, 2.063437},
+		},
+		{
+			&Acosh{},
+			[]float32{2, 2, 2, 2},
+			[]int{1, 4},
+			[]float32{1.316958, 1.316958, 1.316958, 1.316958},
+		},
+	}
+
+	for _, test := range tests {
+		inputs := []tensor.Tensor{
+			ops.TensorWithBackingFixture(test.backing, test.shape...),
+		}
+
+		res, err := test.acosh.Apply(inputs)
+		assert.Nil(t, err)
+
+		assert.Nil(t, err)
+		assert.Equal(t, test.expected, res[0].Data())
+	}
+}
+
+func TestInputValidationAcosh(t *testing.T) {
+	tests := []struct {
+		inputs []tensor.Tensor
+		err    error
+	}{
+		{
+			[]tensor.Tensor{
+				ops.TensorWithBackingFixture([]float32{1, 2}, 2),
+			},
+			nil,
+		},
+		{
+			[]tensor.Tensor{
+				ops.TensorWithBackingFixture([]float64{1, 2}, 2),
+			},
+			nil,
+		},
+		{
+			[]tensor.Tensor{},
+			ops.ErrInvalidInputCount(0, &Acosh{}),
+		},
+		{
+			[]tensor.Tensor{
+				ops.TensorWithBackingFixture([]int{1, 2}, 2),
+			},
+			ops.ErrInvalidInputType(0, "int", &Acosh{}),
+		},
+	}
+
+	for _, test := range tests {
+		acosh := &Acosh{}
+		validated, err := acosh.ValidateInputs(test.inputs)
+
+		assert.Equal(t, test.err, err)
+
+		if test.err == nil {
+			assert.Equal(t, test.inputs, validated)
+		}
+	}
+}