本文整理汇总了Golang中github.com/hrautila/linalg.GetIndexOpts函数的典型用法代码示例。如果您正苦于以下问题:Golang GetIndexOpts函数的具体用法?Golang GetIndexOpts怎么用?Golang GetIndexOpts使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了GetIndexOpts函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Golang代码示例。
示例1: Copy
// Copies a vector X to a vector Y (Y := X).
//
// ARGUMENTS
// X float or complex matrix
// Y float or complex matrix. Must have the same type as X.
//
// OPTIONS
// n integer. If n<0, the default value of n is used.
// The default value is given by 1+(len(x)-offsetx-1)/incx or 0
// if len(x) > offsetx+1
// incx nonzero integer
// incy nonzero integer
// offsetx nonnegative integer
// offsety nonnegative integer;
//
func Copy(X, Y matrix.Matrix, opts ...linalg.Option) (err error) {
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fcopy, X, Y)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
sameType := matrix.EqualTypes(X, Y)
if !sameType {
err = onError("arrays not same type")
return
}
switch X.(type) {
case *matrix.ComplexMatrix:
Xa := X.(*matrix.ComplexMatrix).ComplexArray()
Ya := Y.(*matrix.ComplexMatrix).ComplexArray()
zcopy(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY)
case *matrix.FloatMatrix:
Xa := X.(*matrix.FloatMatrix).FloatArray()
Ya := Y.(*matrix.FloatMatrix).FloatArray()
dcopy(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY)
default:
err = onError("not implemented for parameter types")
}
return
}
开发者ID:hrautila,项目名称:linalg,代码行数:43,代码来源:level1.go
示例2: Scal
// Scales a vector by a constant (X := alpha*X).
//
// ARGUMENTS
// X float or complex matrix
// alpha number (float or complex singleton matrix). Complex alpha is only
// allowed if X is complex.
//
// OPTIONS
// n integer. If n<0, the default value of n is used.
// The default value is equal to 1+(len(x)-offset-1)/inc or 0
// if len(x) > offset+1.
// inc positive integer, default = 1
// offset nonnegative integer, default = 0
//
func Scal(X matrix.Matrix, alpha matrix.Scalar, opts ...linalg.Option) (err error) {
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fscal, X, nil)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
switch X.(type) {
case *matrix.ComplexMatrix:
Xa := X.(*matrix.ComplexMatrix).ComplexArray()
cval := alpha.Complex()
zscal(ind.Nx, cval, Xa[ind.OffsetX:], ind.IncX)
case *matrix.FloatMatrix:
Xa := X.(*matrix.FloatMatrix).FloatArray()
rval := alpha.Float()
if math.IsNaN(rval) {
return onError("alpha not float value")
}
dscal(ind.Nx, rval, Xa[ind.OffsetX:], ind.IncX)
default:
err = onError("not implemented for parameter types")
}
return
}
开发者ID:hrautila,项目名称:linalg,代码行数:40,代码来源:level1.go
示例3: Dot
// Returns Y = X^H*Y for real or complex X, Y.
//
// ARGUMENTS
// X float or complex matrix
// Y float or complex matrix. Must have the same type as X.
//
// OPTIONS
// n integer. If n<0, the default value of n is used.
// The default value is equal to nx = 1+(len(x)-offsetx-1)/incx or 0 if
// len(x) > offsetx+1. If the default value is used, it must be equal to
// ny = 1+(len(y)-offsetx-1)/|incy| or 0 if len(y) > offsety+1
// incx nonzero integer [default=1]
// incy nonzero integer [default=1]
// offsetx nonnegative integer [default=0]
// offsety nonnegative integer [default=0]
//
func Dot(X, Y matrix.Matrix, opts ...linalg.Option) (v matrix.Scalar) {
v = matrix.FScalar(math.NaN())
//cv = cmplx.NaN()
ind := linalg.GetIndexOpts(opts...)
err := check_level1_func(ind, fdot, X, Y)
if err != nil {
return
}
if ind.Nx == 0 {
return matrix.FScalar(0.0)
}
sameType := matrix.EqualTypes(X, Y)
if !sameType {
err = onError("arrays not of same type")
return
}
switch X.(type) {
case *matrix.ComplexMatrix:
Xa := X.(*matrix.ComplexMatrix).ComplexArray()
Ya := Y.(*matrix.ComplexMatrix).ComplexArray()
v = matrix.CScalar(zdotc(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY))
case *matrix.FloatMatrix:
Xa := X.(*matrix.FloatMatrix).FloatArray()
Ya := Y.(*matrix.FloatMatrix).FloatArray()
v = matrix.FScalar(ddot(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY))
//default:
// err = onError("not implemented for parameter types", )
}
return
}
开发者ID:hrautila,项目名称:linalg,代码行数:46,代码来源:level1.go
示例4: GesvdFloat
func GesvdFloat(A, S, U, Vt *matrix.FloatMatrix, opts ...linalg.Option) error {
pars, err := linalg.GetParameters(opts...)
if err != nil {
return err
}
ind := linalg.GetIndexOpts(opts...)
err = checkGesvd(ind, pars, A, S, U, Vt)
if err != nil {
return err
}
if ind.M == 0 || ind.N == 0 {
return nil
}
Aa := A.FloatArray()
Sa := S.FloatArray()
var Ua, Va []float64
Ua = nil
Va = nil
if U != nil {
Ua = U.FloatArray()[ind.OffsetU:]
}
if Vt != nil {
Va = Vt.FloatArray()[ind.OffsetVt:]
}
info := dgesvd(linalg.ParamString(pars.Jobu), linalg.ParamString(pars.Jobvt),
ind.M, ind.N, Aa[ind.OffsetA:], ind.LDa, Sa[ind.OffsetS:], Ua, ind.LDu, Va, ind.LDvt)
if info != 0 {
return onError(fmt.Sprintf("GesvdFloat lapack error: %d", info))
}
return nil
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:31,代码来源:gesvd.go
示例5: GbtrsFloat
func GbtrsFloat(A, B *matrix.FloatMatrix, ipiv []int32, KL int, opts ...linalg.Option) error {
pars, err := linalg.GetParameters(opts...)
if err != nil {
return err
}
ind := linalg.GetIndexOpts(opts...)
ind.Kl = KL
err = checkGbtrs(ind, A, B, ipiv)
if err != nil {
return err
}
if ind.N == 0 || ind.Nrhs == 0 {
return nil
}
Aa := A.FloatArray()
Ba := B.FloatArray()
trans := linalg.ParamString(pars.Trans)
info := dgbtrs(trans, ind.N, ind.Kl, ind.Ku, ind.Nrhs,
Aa[ind.OffsetA:], ind.LDa, ipiv, Ba[ind.OffsetB:], ind.LDb)
if info != 0 {
return onError(fmt.Sprintf("Gbtrs: lapack error: %d", info))
}
return nil
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:25,代码来源:gbtrs.go
示例6: TrsmFloat
// See function Trsm.
func TrsmFloat(A, B *matrix.FloatMatrix, alpha float64, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, ftrsm, A, B, nil, params)
if err != nil {
return
}
if ind.N == 0 || ind.M == 0 {
return
}
Aa := A.FloatArray()
Ba := B.FloatArray()
uplo := linalg.ParamString(params.Uplo)
transA := linalg.ParamString(params.TransA)
side := linalg.ParamString(params.Side)
diag := linalg.ParamString(params.Diag)
dtrsm(side, uplo, transA, diag, ind.M, ind.N, alpha,
Aa[ind.OffsetA:], ind.LDa, Ba[ind.OffsetB:], ind.LDb)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:26,代码来源:all_float.go
示例7: GemmFloat
// See function Gemm.
func GemmFloat(A, B, C *matrix.FloatMatrix, alpha, beta float64, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, fgemm, A, B, C, params)
if err != nil {
return
}
if ind.M == 0 || ind.N == 0 {
return
}
Aa := A.FloatArray()
Ba := B.FloatArray()
Ca := C.FloatArray()
transB := linalg.ParamString(params.TransB)
transA := linalg.ParamString(params.TransA)
//diag := linalg.ParamString(params.Diag)
dgemm(transA, transB, ind.M, ind.N, ind.K, alpha,
Aa[ind.OffsetA:], ind.LDa, Ba[ind.OffsetB:], ind.LDb, beta,
Ca[ind.OffsetC:], ind.LDc)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:27,代码来源:all_float.go
示例8: SymmFloat
// See function Symm.
func SymmFloat(A, B, C *matrix.FloatMatrix, alpha, beta float64, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, fsymm, A, B, C, params)
if err != nil {
return
}
if ind.M == 0 || ind.N == 0 {
return
}
Aa := A.FloatArray()
Ba := B.FloatArray()
Ca := C.FloatArray()
uplo := linalg.ParamString(params.Uplo)
side := linalg.ParamString(params.Side)
dsymm(side, uplo, ind.M, ind.N, alpha, Aa[ind.OffsetA:], ind.LDa,
Ba[ind.OffsetB:], ind.LDb, beta, Ca[ind.OffsetC:], ind.LDc)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:26,代码来源:all_float.go
示例9: GbmvFloat
// See function Gbmv.
func GbmvFloat(A, X, Y *matrix.FloatMatrix, alpha, beta float64, opts ...linalg.Option) (err error) {
var params *linalg.Parameters
params, err = linalg.GetParameters(opts...)
if err != nil {
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level2_func(ind, fgbmv, X, Y, A, params)
if err != nil {
return
}
if ind.M == 0 && ind.N == 0 {
return
}
Xa := X.FloatArray()
Ya := Y.FloatArray()
Aa := A.FloatArray()
if params.Trans == linalg.PNoTrans && ind.N == 0 {
dscal(ind.M, beta, Ya[ind.OffsetY:], ind.IncY)
} else if params.Trans == linalg.PTrans && ind.M == 0 {
dscal(ind.N, beta, Ya[ind.OffsetY:], ind.IncY)
} else {
trans := linalg.ParamString(params.Trans)
dgbmv(trans, ind.M, ind.N, ind.Kl, ind.Ku,
alpha, Aa[ind.OffsetA:], ind.LDa, Xa[ind.OffsetX:], ind.IncX,
beta, Ya[ind.OffsetY:], ind.IncY)
}
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:32,代码来源:all_float.go
示例10: Syr2kFloat
// See function Syrk2.
func Syr2kFloat(A, B, C *matrix.FloatMatrix, alpha, beta float64, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, fsyr2k, A, B, C, params)
if err != nil {
return
}
if ind.N == 0 {
return
}
Aa := A.FloatArray()
Ba := B.FloatArray()
Ca := C.FloatArray()
uplo := linalg.ParamString(params.Uplo)
trans := linalg.ParamString(params.Trans)
//diag := linalg.ParamString(params.Diag)
dsyr2k(uplo, trans, ind.N, ind.K, alpha, Aa[ind.OffsetA:], ind.LDa,
Ba[ind.OffsetB:], ind.LDb, beta, Ca[ind.OffsetC:], ind.LDc)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:26,代码来源:all_float.go
示例11: Gemm
/*
General matrix-matrix product. (L3)
PURPOSE
Computes
C := alpha*A*B + beta*C if transA = PNoTrans and transB = PNoTrans.
C := alpha*A^T*B + beta*C if transA = PTrans and transB = PNoTrans.
C := alpha*A^H*B + beta*C if transA = PConjTrans and transB = PNoTrans.
C := alpha*A*B^T + beta*C if transA = PNoTrans and transB = PTrans.
C := alpha*A^T*B^T + beta*C if transA = PTrans and transB = PTrans.
C := alpha*A^H*B^T + beta*C if transA = PConjTrans and transB = PTrans.
C := alpha*A*B^H + beta*C if transA = PNoTrans and transB = PConjTrans.
C := alpha*A^T*B^H + beta*C if transA = PTrans and transB = PConjTrans.
C := alpha*A^H*B^H + beta*C if transA = PConjTrans and transB = PConjTrans.
The number of rows of the matrix product is m. The number of columns is n.
The inner dimension is k. If k=0, this reduces to C := beta*C.
ARGUMENTS
A float or complex matrix, m*k
B float or complex matrix, k*n
C float or complex matrix, m*n
alpha number (float or complex singleton matrix)
beta number (float or complex singleton matrix)
OPTIONS
transA PNoTrans, PTrans or PConjTrans
transB PNoTrans, PTrans or PConjTrans
m integer. If negative, the default value is used. The default value is
m = A.Rows of if transA != PNoTrans m = A.Cols.
n integer. If negative, the default value is used. The default value is
n = (transB == PNoTrans) ? B.Cols : B.Rows.
k integer. If negative, the default value is used. The default value is
k=A.Cols or if transA != PNoTrans) k = A.Rows, transA=PNoTrans.
If the default value is used it should also be equal to
(transB == PNoTrans) ? B.Rows : B.Cols.
ldA nonnegative integer. ldA >= max(1,m) of if transA != NoTrans max(1,k).
If zero, the default value is used.
ldB nonnegative integer. ldB >= max(1,k) or if transB != NoTrans max(1,n).
If zero, the default value is used.
ldC nonnegative integer. ldC >= max(1,m).
If zero, the default value is used.
offsetA nonnegative integer
offsetB nonnegative integer
offsetC nonnegative integer;
*/
func Gemm(A, B, C matrix.Matrix, alpha, beta matrix.Scalar, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, fgemm, A, B, C, params)
if err != nil {
return
}
if ind.M == 0 || ind.N == 0 {
return
}
if !matrix.EqualTypes(A, B, C) {
return onError("Parameters not of same type")
}
switch A.(type) {
case *matrix.FloatMatrix:
Aa := A.(*matrix.FloatMatrix).FloatArray()
Ba := B.(*matrix.FloatMatrix).FloatArray()
Ca := C.(*matrix.FloatMatrix).FloatArray()
aval := alpha.Float()
bval := beta.Float()
if math.IsNaN(aval) || math.IsNaN(bval) {
return onError("alpha or beta not a number")
}
transB := linalg.ParamString(params.TransB)
transA := linalg.ParamString(params.TransA)
dgemm(transA, transB, ind.M, ind.N, ind.K, aval,
Aa[ind.OffsetA:], ind.LDa, Ba[ind.OffsetB:], ind.LDb, bval,
Ca[ind.OffsetC:], ind.LDc)
case *matrix.ComplexMatrix:
Aa := A.(*matrix.ComplexMatrix).ComplexArray()
Ba := B.(*matrix.ComplexMatrix).ComplexArray()
Ca := C.(*matrix.ComplexMatrix).ComplexArray()
aval := alpha.Complex()
if cmplx.IsNaN(aval) {
return onError("alpha not a number")
}
bval := beta.Complex()
if cmplx.IsNaN(bval) {
return onError("beta not a number")
}
transB := linalg.ParamString(params.TransB)
transA := linalg.ParamString(params.TransA)
zgemm(transA, transB, ind.M, ind.N, ind.K, aval,
Aa[ind.OffsetA:], ind.LDa, Ba[ind.OffsetB:], ind.LDb, bval,
Ca[ind.OffsetC:], ind.LDc)
default:
return onError("Unknown type, not implemented")
}
//.........这里部分代码省略.........
开发者ID:jvlmdr,项目名称:linalg,代码行数:101,代码来源:level3.go
示例12: Gtrrf
/*
LU factorization of a real or complex tridiagonal matrix.
PURPOSE
Factors an n by n real or complex tridiagonal matrix A as A = P*L*U.
A is specified by its lower diagonal dl, diagonal d, and upper
diagonal du. On exit dl, d, du, du2 and ipiv contain the details
of the factorization.
ARGUMENTS.
DL float or complex matrix
D float or complex matrix. Must have the same type as DL.
DU float or complex matrix. Must have the same type as DL.
DU2 float or complex matrix of length at least n-2. Must have the
same type as DL.
ipiv int vector of length at least n
OPTIONS
n nonnegative integer. If negative, the default value is used.
offsetdl nonnegative integer
offsetd nonnegative integer
offsetdu nonnegative integer
*/
func Gtrrf(DL, D, DU, DU2 matrix.Matrix, ipiv []int32, opts ...linalg.Option) error {
ind := linalg.GetIndexOpts(opts...)
if ind.OffsetD < 0 {
return onError("Gttrf: offset D")
}
if ind.N < 0 {
ind.N = D.NumElements() - ind.OffsetD
}
if ind.N < 0 {
return onError("Gttrf: size D")
}
if ind.N == 0 {
return nil
}
if ind.OffsetDL < 0 {
return onError("Gttrf: offset DL")
}
sizeDL := DL.NumElements()
if sizeDL < ind.OffsetDL+ind.N-1 {
return onError("Gttrf: sizeDL")
}
if ind.OffsetDU < 0 {
return onError("Gttrf: offset DU")
}
sizeDU := DU.NumElements()
if sizeDU < ind.OffsetDU+ind.N-1 {
return onError("Gttrf: sizeDU")
}
sizeDU2 := DU2.NumElements()
if sizeDU2 < ind.N-2 {
return onError("Gttrf: sizeDU2")
}
if len(ipiv) < ind.N {
return onError("Gttrf: size ipiv")
}
info := -1
if !matrix.EqualTypes(DL, D, DU, DU2) {
return onError("Gttrf: arguments not same type")
}
switch DL.(type) {
case *matrix.FloatMatrix:
DLa := DL.(*matrix.FloatMatrix).FloatArray()
Da := D.(*matrix.FloatMatrix).FloatArray()
DUa := DU.(*matrix.FloatMatrix).FloatArray()
DU2a := DU2.(*matrix.FloatMatrix).FloatArray()
info = dgttrf(ind.N, DLa[ind.OffsetDL:], Da[ind.OffsetD:], DUa[ind.OffsetDU:],
DU2a, ipiv)
case *matrix.ComplexMatrix:
return onError("Gttrf: complex not yet implemented")
}
if info != 0 {
return onError(fmt.Sprintf("Gttrf lapack error: %d", info))
}
return nil
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:80,代码来源:gttrf.go
示例13: Gels
/*
Solves a general real or complex set of linear equations.
PURPOSE
Solves A*X=B with A m by n real or complex.
ARGUMENTS.
A float or complex matrix
B float or complex matrix. Must have the same type as A.
OPTIONS:
trans
m nonnegative integer. If negative, the default value is used.
n nonnegative integer. If negative, the default value is used.
nrhs nonnegative integer. If negative, the default value is used.
ldA positive integer. ldA >= max(1,n). If zero, the default value is used.
ldB positive integer. ldB >= max(1,n). If zero, the default value is used.
*/
func Gels(A, B matrix.Matrix, opts ...linalg.Option) error {
pars, _ := linalg.GetParameters(opts...)
ind := linalg.GetIndexOpts(opts...)
arows := ind.LDa
brows := ind.LDb
if ind.M < 0 {
ind.M = A.Rows()
}
if ind.N < 0 {
ind.N = A.Cols()
}
if ind.Nrhs < 0 {
ind.Nrhs = B.Cols()
}
if ind.M == 0 || ind.N == 0 || ind.Nrhs == 0 {
return nil
}
if ind.LDa == 0 {
ind.LDa = max(1, A.LeadingIndex())
arows = max(1, A.Rows())
}
if ind.LDa < max(1, ind.M) {
return onError("Gesv: ldA")
}
if ind.LDb == 0 {
ind.LDb = max(1, B.LeadingIndex())
brows = max(1, B.Rows())
}
if ind.LDb < max(ind.M, ind.N) {
return onError("Gesv: ldB")
}
if !matrix.EqualTypes(A, B) {
return onError("Gesv: arguments not of same type")
}
_, _ = arows, brows // todo!! something
info := -1
trans := linalg.ParamString(pars.Trans)
switch A.(type) {
case *matrix.FloatMatrix:
Aa := A.(*matrix.FloatMatrix).FloatArray()
Ba := B.(*matrix.FloatMatrix).FloatArray()
info = dgels(trans, ind.M, ind.N, ind.Nrhs, Aa[ind.OffsetA:], ind.LDa,
Ba[ind.OffsetB:], ind.LDb)
case *matrix.ComplexMatrix:
Aa := A.(*matrix.ComplexMatrix).ComplexArray()
Ba := B.(*matrix.ComplexMatrix).ComplexArray()
info = zgels(trans, ind.M, ind.N, ind.Nrhs, Aa[ind.OffsetA:], ind.LDa,
Ba[ind.OffsetB:], ind.LDb)
}
if info != 0 {
return onError(fmt.Sprintf("Gels: lapack error: %d", info))
}
return nil
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:73,代码来源:gels.go
示例14: GbsvComplex
func GbsvComplex(A, B *matrix.ComplexMatrix, ipiv []int32, kl int, opts ...linalg.Option) error {
ind := linalg.GetIndexOpts(opts...)
ind.Kl = kl
err := checkGbsv(ind, A, B, ipiv)
if err != nil {
return err
}
if ind.N == 0 || ind.Nrhs == 0 {
return nil
}
return onError("Gbsv: complex not implemented yet")
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:12,代码来源:gbsv.go
示例15: ScalFloat
// See function Scal.
func ScalFloat(X *matrix.FloatMatrix, alpha float64, opts ...linalg.Option) (err error) {
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fscal, X, nil)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.FloatArray()
dscal(ind.Nx, alpha, Xa[ind.OffsetX:], ind.IncX)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:14,代码来源:all_float.go
示例16: CopyFloat
// See function Copy.
func CopyFloat(X, Y *matrix.FloatMatrix, opts ...linalg.Option) (err error) {
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fcopy, X, Y)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.FloatArray()
Ya := Y.FloatArray()
dcopy(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:15,代码来源:all_float.go
示例17: AsumComplex
// See function Asum.
func AsumComplex(X *matrix.ComplexMatrix, opts ...linalg.Option) (v float64, err error) {
v = 0.0
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fasum, X, nil)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.ComplexArray()
v = dzasum(ind.Nx, Xa[ind.OffsetX:], ind.IncX)
return
}
开发者ID:hrautila,项目名称:linalg,代码行数:15,代码来源:all_complex.go
示例18: Herk
/*
Rank-k update of symmetric matrix. (L3)
Herk(A, C, alpha, beta, uplo=PLower, trans=PNoTrans, n=-1,
k=-1, ldA=max(1,A.Rows), ldC=max(1,C.Rows), offsetA=0, offsetB=0)
Computes
C := alpha*A*A^T + beta*C, if trans is PNoTrans
C := alpha*A^T*A + beta*C, if trans is PTrans
C is symmetric (real or complex) of order n. The inner dimension of the matrix
product is k. If k=0 this is interpreted as C := beta*C.
ARGUMENTS
A float or complex matrix.
C float or complex matrix. Must have the same type as A.
alpha number (float or complex singleton matrix). Complex alpha is only
allowed if A is complex.
beta number (float or complex singleton matrix). Complex beta is only
allowed if A is complex.
OPTIONS
uplo PLower or PUpper
trans PNoTrans or PTrans
n integer. If negative, the default value is used.
The default value is n = A.Rows or if trans == PNoTrans n = A.Cols.
k integer. If negative, the default value is used.
The default value is k = A.Cols, or if trans == PNoTrans k = A.Rows.
ldA nonnegative integer.
ldA >= max(1,n) or if trans != PNoTrans ldA >= max(1,k).
If zero, the default value is used.
ldC nonnegative integer. ldC >= max(1,n).
If zero, the default value is used.
offsetA nonnegative integer
offsetC nonnegative integer;
*/
func Herk(A, C matrix.Matrix, alpha, beta matrix.Scalar, opts ...linalg.Option) (err error) {
params, e := linalg.GetParameters(opts...)
if e != nil {
err = e
return
}
ind := linalg.GetIndexOpts(opts...)
err = check_level3_func(ind, fsyrk, A, nil, C, params)
if e != nil || err != nil {
return
}
if !matrix.EqualTypes(A, C) {
return onError("Parameters not of same type")
}
switch A.(type) {
case *matrix.FloatMatrix:
Aa := A.(*matrix.FloatMatrix).FloatArray()
Ca := C.(*matrix.FloatMatrix).FloatArray()
aval := alpha.Float()
bval := beta.Float()
if math.IsNaN(aval) || math.IsNaN(bval) {
return onError("alpha or beta not a number")
}
uplo := linalg.ParamString(params.Uplo)
trans := linalg.ParamString(params.Trans)
dsyrk(uplo, trans, ind.N, ind.K, aval, Aa[ind.OffsetA:], ind.LDa, bval,
Ca[ind.OffsetC:], ind.LDc)
case *matrix.ComplexMatrix:
Aa := A.(*matrix.ComplexMatrix).ComplexArray()
Ca := C.(*matrix.ComplexMatrix).ComplexArray()
aval := alpha.Complex()
if cmplx.IsNaN(aval) {
return onError("alpha not a real or complex number")
}
bval := beta.Float()
if math.IsNaN(bval) {
return onError("beta not a real number")
}
uplo := linalg.ParamString(params.Uplo)
trans := linalg.ParamString(params.Trans)
zherk(uplo, trans, ind.N, ind.K, aval, Aa[ind.OffsetA:], ind.LDa, bval,
Ca[ind.OffsetC:], ind.LDc)
default:
return onError("Unknown type, not implemented")
}
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:85,代码来源:level3.go
示例19: AsumFloat
// See function Asum.
func AsumFloat(X *matrix.FloatMatrix, opts ...linalg.Option) (v float64) {
v = math.NaN()
ind := linalg.GetIndexOpts(opts...)
err := check_level1_func(ind, fasum, X, nil)
if err != nil {
return
}
if ind.Nx == 0 {
v = 0.0
return
}
Xa := X.FloatArray()
v = dasum(ind.Nx, Xa[ind.OffsetX:], ind.IncX)
return
}
开发者ID:jvlmdr,项目名称:linalg,代码行数:16,代码来源:all_float.go
示例20: DotcComplex
// See function Dotc.
func DotcComplex(X, Y *matrix.ComplexMatrix, opts ...linalg.Option) (v complex128, err error) {
v = 0.0
ind := linalg.GetIndexOpts(opts...)
err = check_level1_func(ind, fdot, X, Y)
if err != nil {
return
}
if ind.Nx == 0 {
return
}
Xa := X.ComplexArray()
Ya := Y.ComplexArray()
v = zdotc(ind.Nx, Xa[ind.OffsetX:], ind.IncX, Ya[ind.OffsetY:], ind.IncY)
return
}
开发者ID:hrautila,项目名称:linalg,代码行数:16,代码来源:all_complex.go
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