feat(modules): migrate to go modules and bump go version 1.14.4

- migrate to go module
- bump go version 1.14.4

Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>

vendor/gonum.org/v1/gonum/mat/cdense.go

@@ -0,0 +1,168 @@
+// Copyright ©2019 The Gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package mat
+
+import "gonum.org/v1/gonum/blas/cblas128"
+
+// Dense is a dense matrix representation with complex data.
+type CDense struct {
+	mat cblas128.General
+
+	capRows, capCols int
+}
+
+// Dims returns the number of rows and columns in the matrix.
+func (m *CDense) Dims() (r, c int) {
+	return m.mat.Rows, m.mat.Cols
+}
+
+// H performs an implicit conjugate transpose by returning the receiver inside a
+// Conjugate.
+func (m *CDense) H() CMatrix {
+	return Conjugate{m}
+}
+
+// NewCDense creates a new complex Dense matrix with r rows and c columns.
+// If data == nil, a new slice is allocated for the backing slice.
+// If len(data) == r*c, data is used as the backing slice, and changes to the
+// elements of the returned CDense will be reflected in data.
+// If neither of these is true, NewCDense will panic.
+// NewCDense will panic if either r or c is zero.
+//
+// The data must be arranged in row-major order, i.e. the (i*c + j)-th
+// element in the data slice is the {i, j}-th element in the matrix.
+func NewCDense(r, c int, data []complex128) *CDense {
+	if r <= 0 || c <= 0 {
+		if r == 0 || c == 0 {
+			panic(ErrZeroLength)
+		}
+		panic("mat: negative dimension")
+	}
+	if data != nil && r*c != len(data) {
+		panic(ErrShape)
+	}
+	if data == nil {
+		data = make([]complex128, r*c)
+	}
+	return &CDense{
+		mat: cblas128.General{
+			Rows:   r,
+			Cols:   c,
+			Stride: c,
+			Data:   data,
+		},
+		capRows: r,
+		capCols: c,
+	}
+}
+
+// reuseAs resizes an empty matrix to a r×c matrix,
+// or checks that a non-empty matrix is r×c.
+//
+// reuseAs must be kept in sync with reuseAsZeroed.
+func (m *CDense) reuseAs(r, c int) {
+	if m.mat.Rows > m.capRows || m.mat.Cols > m.capCols {
+		// Panic as a string, not a mat.Error.
+		panic("mat: caps not correctly set")
+	}
+	if r == 0 || c == 0 {
+		panic(ErrZeroLength)
+	}
+	if m.IsZero() {
+		m.mat = cblas128.General{
+			Rows:   r,
+			Cols:   c,
+			Stride: c,
+			Data:   useC(m.mat.Data, r*c),
+		}
+		m.capRows = r
+		m.capCols = c
+		return
+	}
+	if r != m.mat.Rows || c != m.mat.Cols {
+		panic(ErrShape)
+	}
+}
+
+func (m *CDense) reuseAsZeroed(r, c int) {
+	// This must be kept in-sync with reuseAs.
+	if m.mat.Rows > m.capRows || m.mat.Cols > m.capCols {
+		// Panic as a string, not a mat.Error.
+		panic("mat: caps not correctly set")
+	}
+	if r == 0 || c == 0 {
+		panic(ErrZeroLength)
+	}
+	if m.IsZero() {
+		m.mat = cblas128.General{
+			Rows:   r,
+			Cols:   c,
+			Stride: c,
+			Data:   useZeroedC(m.mat.Data, r*c),
+		}
+		m.capRows = r
+		m.capCols = c
+		return
+	}
+	if r != m.mat.Rows || c != m.mat.Cols {
+		panic(ErrShape)
+	}
+	m.Zero()
+}
+
+// Reset zeros the dimensions of the matrix so that it can be reused as the
+// receiver of a dimensionally restricted operation.
+//
+// See the Reseter interface for more information.
+func (m *CDense) Reset() {
+	// Row, Cols and Stride must be zeroed in unison.
+	m.mat.Rows, m.mat.Cols, m.mat.Stride = 0, 0, 0
+	m.capRows, m.capCols = 0, 0
+	m.mat.Data = m.mat.Data[:0]
+}
+
+// IsZero returns whether the receiver is zero-sized. Zero-sized matrices can be the
+// receiver for size-restricted operations. CDense matrices can be zeroed using Reset.
+func (m *CDense) IsZero() bool {
+	// It must be the case that m.Dims() returns
+	// zeros in this case. See comment in Reset().
+	return m.mat.Stride == 0
+}
+
+// Zero sets all of the matrix elements to zero.
+func (m *CDense) Zero() {
+	r := m.mat.Rows
+	c := m.mat.Cols
+	for i := 0; i < r; i++ {
+		zeroC(m.mat.Data[i*m.mat.Stride : i*m.mat.Stride+c])
+	}
+}
+
+// Copy makes a copy of elements of a into the receiver. It is similar to the
+// built-in copy; it copies as much as the overlap between the two matrices and
+// returns the number of rows and columns it copied. If a aliases the receiver
+// and is a transposed Dense or VecDense, with a non-unitary increment, Copy will
+// panic.
+//
+// See the Copier interface for more information.
+func (m *CDense) Copy(a CMatrix) (r, c int) {
+	r, c = a.Dims()
+	if a == m {
+		return r, c
+	}
+	r = min(r, m.mat.Rows)
+	c = min(c, m.mat.Cols)
+	if r == 0 || c == 0 {
+		return 0, 0
+	}
+	// TODO(btracey): Check for overlap when complex version exists.
+	// TODO(btracey): Add fast-paths.
+	for i := 0; i < r; i++ {
+		for j := 0; j < c; j++ {
+			m.set(i, j, a.At(i, j))
+		}
+	}
+	return r, c
+}