GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-07-23 21:34:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix error handling of level 1 routines

Browse Source
This commit is contained in:
Gael Guennebaud 2010-11-04 22:25:59 +01:00
parent 15e8ad686c
commit fe1353080e
1 changed files with 23 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
blas/level1_impl.h
View File

@ -30,6 +30,8 @@ int EIGEN_BLAS_FUNC(axpy)(int *n, RealScalar *palpha, RealScalar *px, int *incx,
Scalar* y = reinterpret_cast<Scalar*>(py);
Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
if(*n<=0) return 0;
if(*incx==1 && *incy==1) vector(y,*n) += alpha * vector(x,*n);
else if(*incx>0 && *incy>0) vector(y,*n,*incy) += alpha * vector(x,*n,*incx);
else if(*incx>0 && *incy<0) vector(y,*n,-*incy).reverse() += alpha * vector(x,*n,*incx);
@ -86,6 +88,8 @@ int EIGEN_BLAS_FUNC(copy)(int *n, RealScalar *px, int *incx, RealScalar *py, int
{
// std::cerr << "_copy " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
@ -103,8 +107,7 @@ Scalar EIGEN_BLAS_FUNC(dot)(int *n, RealScalar *px, int *incx, RealScalar *py, i
{
// std::cerr << "_dot " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0)
return 0;
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
@ -121,10 +124,9 @@ int EIGEN_CAT(EIGEN_CAT(i,SCALAR_SUFFIX),amax_)(int *n, RealScalar *px, int *inc
{
// std::cerr << "i_amax " << *n << " " << *incx << "\n";
Scalar* x = reinterpret_cast<Scalar*>(px);
if(*n<=0) return 0;
if(*n<=0)
return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
DenseIndex ret;
@ -159,6 +161,8 @@ Scalar EIGEN_BLAS_FUNC(dotc)(int *n, RealScalar *px, int *incx, RealScalar *py,
{
// std::cerr << "_dotc " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
@ -176,6 +180,8 @@ Scalar EIGEN_BLAS_FUNC(dotu)(int *n, RealScalar *px, int *incx, RealScalar *py,
{
// std::cerr << "_dotu " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
Scalar res;
@ -194,10 +200,9 @@ Scalar EIGEN_BLAS_FUNC(dotu)(int *n, RealScalar *px, int *incx, RealScalar *py,
Scalar EIGEN_BLAS_FUNC(nrm2)(int *n, RealScalar *px, int *incx)
{
// std::cerr << "_nrm2 " << *n << " " << *incx << "\n";
Scalar* x = reinterpret_cast<Scalar*>(px);
if(*n<=0) return 0;
if(*n<=0)
return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
if(*incx==1) return vector(x,*n).norm();
else return vector(x,*n,std::abs(*incx)).norm();
@ -206,10 +211,9 @@ Scalar EIGEN_BLAS_FUNC(nrm2)(int *n, RealScalar *px, int *incx)
RealScalar EIGEN_CAT(EIGEN_CAT(REAL_SCALAR_SUFFIX,SCALAR_SUFFIX),nrm2_)(int *n, RealScalar *px, int *incx)
{
// std::cerr << "__nrm2 " << *n << " " << *incx << "\n";
Scalar* x = reinterpret_cast<Scalar*>(px);
if(*n<=0) return 0;
if(*n<=0)
return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
if(*incx==1)
return vector(x,*n).norm();
@ -221,14 +225,13 @@ RealScalar EIGEN_CAT(EIGEN_CAT(REAL_SCALAR_SUFFIX,SCALAR_SUFFIX),nrm2_)(int *n,
int EIGEN_BLAS_FUNC(rot)(int *n, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pc, RealScalar *ps)
{
// std::cerr << "_rot " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
Scalar c = *reinterpret_cast<Scalar*>(pc);
Scalar s = *reinterpret_cast<Scalar*>(ps);
if(*n<=0)
return 0;
StridedVectorType vx(vector(x,*n,std::abs(*incx)));
StridedVectorType vy(vector(y,*n,std::abs(*incy)));
@ -328,14 +331,13 @@ int EIGEN_BLAS_FUNC(rotmg)(RealScalar *d1, RealScalar *d2, RealScalar *x1, RealS
int EIGEN_BLAS_FUNC(scal)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
{
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
// std::cerr << "_scal " << *n << " " << alpha << " " << *incx << "\n";
if(*n<=0)
return 0;
if(*incx==1) vector(x,*n) *= alpha;
else vector(x,*n,std::abs(*incx)) *= alpha;
@ -345,14 +347,13 @@ int EIGEN_BLAS_FUNC(scal)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
#if ISCOMPLEX
int EIGEN_CAT(EIGEN_CAT(SCALAR_SUFFIX,REAL_SCALAR_SUFFIX),scal_)(int *n, RealScalar *palpha, RealScalar *px, int *incx)
{
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
RealScalar alpha = *palpha;
// std::cerr << "__scal " << *n << " " << alpha << " " << *incx << "\n";
if(*n<=0)
return 0;
if(*incx==1) vector(x,*n) *= alpha;
else vector(x,*n,std::abs(*incx)) *= alpha;
@ -364,12 +365,11 @@ int EIGEN_BLAS_FUNC(swap)(int *n, RealScalar *px, int *incx, RealScalar *py, int
{
// std::cerr << "_swap " << *n << " " << *incx << " " << *incy << "\n";
if(*n<=0) return 0;
Scalar* x = reinterpret_cast<Scalar*>(px);
Scalar* y = reinterpret_cast<Scalar*>(py);
if(*n<=0)
return 0;
if(*incx==1 && *incy==1) vector(y,*n).swap(vector(x,*n));
else if(*incx>0 && *incy>0) vector(y,*n,*incy).swap(vector(x,*n,*incx));
else if(*incx>0 && *incy<0) vector(y,*n,-*incy).reverse().swap(vector(x,*n,*incx));