internal ConjugatedVectorDescriptor(VectorDescriptor descriptor)
{
Debug.Assert(descriptor != null);
Size = descriptor.Size;
Stride = descriptor.Stride;
}
private static void swap(
VectorDescriptor xDescriptor, double *x,
VectorDescriptor yDescriptor, double *y)
{
NativeMethods.cblas_dswap(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static void copy(
VectorDescriptor xDescriptor, float *x,
VectorDescriptor yDescriptor, float *y)
{
NativeMethods.cblas_scopy(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static void swap(
VectorDescriptor xDescriptor, complexf *x,
VectorDescriptor yDescriptor, complexf *y)
{
NativeMethods.cblas_cswap(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static void copy(
VectorDescriptor xDescriptor, complex *x,
VectorDescriptor yDescriptor, complex *y)
{
NativeMethods.cblas_zcopy(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static float dot(
VectorDescriptor xDescriptor, float *x,
VectorDescriptor yDescriptor, float *y)
{
return(NativeMethods.cblas_sdot(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride));
}
private static double dot(
VectorDescriptor xDescriptor, double *x,
VectorDescriptor yDescriptor, double *y)
{
return(NativeMethods.cblas_ddot(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride));
}
private static void axpy(
double a,
VectorDescriptor xDescriptor, double *x,
VectorDescriptor yDescriptor, double *y)
{
NativeMethods.cblas_daxpy(
xDescriptor.Size,
a,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static void rot(
VectorDescriptor xDescriptor, float *x,
VectorDescriptor yDescriptor, float *y,
float c, float s)
{
NativeMethods.cblas_srot(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride,
c, s);
}
private static void axpy(
complex a,
VectorDescriptor xDescriptor, complex *x,
VectorDescriptor yDescriptor, complex *y)
{
NativeMethods.cblas_zaxpy(
xDescriptor.Size,
&a,
x, xDescriptor.Stride,
y, yDescriptor.Stride);
}
private static void rot(
VectorDescriptor xDescriptor, complex *x,
VectorDescriptor yDescriptor, complex *y,
double c, double s)
{
NativeMethods.cblas_zdrot(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride,
c, s);
}
private static complex dotc(
ConjugatedVectorDescriptor xDescriptor, complex *x,
VectorDescriptor yDescriptor, complex *y)
{
complex result;
NativeMethods.cblas_zdotc_sub(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride,
&result);
return(result);
}
private static complexf dotu(
VectorDescriptor xDescriptor, complexf *x,
VectorDescriptor yDescriptor, complexf *y)
{
complexf result;
NativeMethods.cblas_cdotu_sub(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride,
&result);
return(result);
}
internal Vector(VectorDescriptor descriptor, T[] storage, int offset)
{
Requires.NotNull(descriptor, nameof(descriptor));
Requires.NotNull(storage, nameof(storage));
Requires.NonNegative(offset, nameof(offset));
if (storage.Length <= offset + (descriptor.Size - 1) * descriptor.Stride)
{
throw new ArgumentException(Strings.InsufficientStorageLength);
}
Descriptor = descriptor;
Storage = storage;
Offset = offset;
}
public static double SDot(
VectorDescriptor xDescriptor, float *x,
VectorDescriptor yDescriptor, float *y)
{
Requires.NotNull(xDescriptor, nameof(xDescriptor));
Requires.NotNullPtr(x, nameof(x));
Requires.NotNull(yDescriptor, nameof(yDescriptor));
Requires.NotNullPtr(y, nameof(y));
if (xDescriptor.Size != yDescriptor.Size)
{
throw new ArgumentException(Strings.VectorSizesAreNotEqual);
}
return(sdot(xDescriptor, x, yDescriptor, y));
}
private static void rotm(
VectorDescriptor xDescriptor, float *x,
VectorDescriptor yDescriptor, float *y,
float h11, float h12, float h21, float h22)
{
var h = stackalloc float[5];
h[1] = h11;
h[2] = h21;
h[3] = h12;
h[4] = h22;
if (h11 == 1 && h22 == 1)
{
if (h12 == 0 && h21 == 0)
{
h[0] = -2;
}
else
{
h[0] = 0;
}
}
else if (h12 == 1 && h21 == -1)
{
h[0] = 1;
}
else
{
h[0] = -1;
}
NativeMethods.cblas_srotm(
xDescriptor.Size,
x, xDescriptor.Stride,
y, yDescriptor.Stride,
h);
}
private static void scal(complexf a, VectorDescriptor descriptor, complexf *x)
{
NativeMethods.cblas_cscal(descriptor.Size, &a, x, descriptor.Stride);
}
private static float nrm2(VectorDescriptor descriptor, float *x)
{
return(NativeMethods.cblas_snrm2(descriptor.Size, x, descriptor.Stride));
}
private static double nrm2(VectorDescriptor descriptor, complex *x)
{
return(NativeMethods.cblas_dznrm2(descriptor.Size, x, descriptor.Stride));
}
private static int iamin(VectorDescriptor descriptor, float *x)
{
return((int)NativeMethods.cblas_isamin(descriptor.Size, x, descriptor.Stride));
}
private static double asum(VectorDescriptor descriptor, double *x)
{
return(NativeMethods.cblas_dasum(descriptor.Size, x, descriptor.Stride));
}
private static float asum(VectorDescriptor descriptor, complexf *x)
{
return(NativeMethods.cblas_scasum(descriptor.Size, x, descriptor.Stride));
}
private static int iamax(VectorDescriptor descriptor, complex *x)
{
return((int)NativeMethods.cblas_izamax(descriptor.Size, x, descriptor.Stride));
}
private static void scal(double a, VectorDescriptor descriptor, complex *x)
{
NativeMethods.cblas_zdscal(descriptor.Size, a, x, descriptor.Stride);
}
private static void scal(float a, VectorDescriptor descriptor, float *x)
{
NativeMethods.cblas_sscal(descriptor.Size, a, x, descriptor.Stride);
}