(S|D|C|Z)LASCL¶

Single, double, single complex, and double complex LASCL.

Description¶

Scales part of a matrix taking care to avoid over/underflow.

$A \assign \frac{\fvar{CTO}}{\fvar{CFROM}} A$

Supports matrices stored in the following formats:

TYPE	Storage format
G	Full matrix
L	Lower triangular
U	Upper triangular
H	Upper Hessenberg
B	Symmetric band with lower band stored
Q	Symmetric band with upper band stored
Z	Band matrix

LAPACK Interface¶

void slascl(const char *TYPE, const qml_long *KL, const qml_long *KU,
    const float *CFROM, const float *CTO, const qml_long *M, const qml_long *N,
    float *A, const qml_long *LDA, qml_long *INFO);

void dlascl(const char *TYPE, const qml_long *KL, const qml_long *KU,
    const double *CFROM, const double *CTO, const qml_long *M, const qml_long *N,
    double *A, const qml_long *LDA, qml_long *INFO);

void clascl(const char *TYPE, const qml_long *KL, const qml_long *KU,
    const float *CFROM, const float *CTO, const qml_long *M, const qml_long *N,
    qml_single_complex *A, const qml_long *LDA, qml_long *INFO);

void zlascl(const char *TYPE, const qml_long *KL, const qml_long *KU,
    const double *CFROM, const double *CTO, const qml_long *M, const qml_long *N,
    qml_double_complex *A, const qml_long *LDA, qml_long *INFO);

Arguments¶

TYPE	Specifies storage format of A
KL	Lower bandwidth for banded storage formats
KU	Upper bandwidth for banded storage formats
CFROM	Scaling factor
CTO	Scaling factor
M	Number of rows of A
N	Number of columns of A
A	Source matrix
LDA	Leading dimension of A
INFO	0 on success