(S|D|C|Z)LANGE¶

Single, double, single complex, and double complex LANGE.

Description¶

Computes the 1-norm, Frobenius norm, infinity-norm, or largest absolute value of a general rectangular matrix.

NORM	Computes
M	$\max \|A_{ij}\|$
1 or O	$\|\|A\|\|_1$
I	$\|\|A\|\|_\infty$
F or E	$\|\|A\|\|_F$

LAPACK Interface¶

float slange(const char *NORM, const qml_long *M, const qml_long *N,
    const float *A, const qml_long *LDA, float *WORK);

double dlange(const char *NORM, const qml_long *M, const qml_long *N,
    const double *A, const qml_long *LDA, double *WORK);

float clange(const char *NORM, const qml_long *M, const qml_long *N,
    const qml_single_complex *A, const qml_long *LDA, float *WORK);

double zlange(const char *NORM, const qml_long *M, const qml_long *N,
    const qml_double_complex *A, const qml_long *LDA, double *WORK);

Arguments¶

NORM	Type of norm to compute
M	Number of rows of A
N	Number of columns of A
A	Matrix of size M x N
LDA	Leading dimension of A
WORK	Temporary workspace of size M used for infinity-norm, unused otherwise