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NAG[f16tgc] NAG[nag_ztr_load] - Matrix initialization, complex triangular matrix
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Calling Sequence
f16tgc(uplo, alpha, diag, a, 'n'=n, 'fail'=fail)
nag_ztr_load(. . .)
Parameters
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uplo - String;
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On entry: specifies whether the upper or lower triangular part of  is stored.
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 The upper triangular part of  is stored.
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 The lower triangular part of  is stored.
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Constraint:   "Nag_Upper" or "Nag_Lower". .
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alpha - complex;
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On entry: the value,  , to be assigned to the off-diagonal elements of  .
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diag - complex;
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On entry: the value,  , to be assigned to the diagonal elements of  .
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a - Matrix(1..dim1, 1..dim2, datatype=complex[8], order=order);
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Note: this array may be supplied in Fortran_order or C_order , as specified by order. All array parameters must use a consistent order.
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If  ,  is upper triangular and the elements of the array below the diagonal are not referenced.
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If  ,  is lower triangular and the elements of the array above the diagonal are not referenced.
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'n'=n - integer; (optional)
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Default value: the dimension of the array a.
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On entry:  , the order of the matrix  .
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Constraint:  . .
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'fail'=fail - table; (optional)
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The NAG error argument, see the documentation for NagError.
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Description
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Purpose
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nag_ztr_load (f16tgc) initializes a complex triangular matrix.
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Description
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nag_ztr_load (f16tgc) forms the complex  by  triangular matrix  given by
![a[i*j] = piecewise(i = j, d, i <> j, alpha)](/support/helpjp/helpview.aspx?si=10287/file08343/math158.png)
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Error Indicators and Warnings
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"NE_BAD_PARAM"
On entry, argument  had an illegal value.
"NE_INT"
On entry,  . Constraint:  .
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Examples
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uplo := "Nag_Lower":
alpha := 1+I:
diag := 1-I:
a := Matrix(3, 3, datatype=complex[8]):
NAG:-f16tgc(uplo, alpha, diag, a):
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