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Class org.netlib.blas.Dtrmm

java.lang.Object
   |
   +----org.netlib.blas.Dtrmm

public class Dtrmm

extends Object

Following is the description from the original
Fortran source.  For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  DTRMM  performs one of the matrix-matrix operations
 *
 *     B := alpha*op( A )*B,   or   B := alpha*B*op( A ),
 *
 *  where  alpha  is a scalar,  B  is an m by n matrix,  A  is a unit, or
 *  non-unit,  upper or lower triangular matrix  and  op( A )  is one  of
 *
 *     op( A ) = A   or   op( A ) = A'.
 *
 *  Parameters
 *  ==========
 *
 *  SIDE   - CHARACTER*1.
 *           On entry,  SIDE specifies whether  op( A ) multiplies B from
 *           the left or right as follows:
 *
 *              SIDE = 'L' or 'l'   B := alpha*op( A )*B.
 *
 *              SIDE = 'R' or 'r'   B := alpha*B*op( A ).
 *
 *           Unchanged on exit.
 *
 *  UPLO   - CHARACTER*1.
 *           On entry, UPLO specifies whether the matrix A is an upper or
 *           lower triangular matrix as follows:
 *
 *              UPLO = 'U' or 'u'   A is an upper triangular matrix.
 *
 *              UPLO = 'L' or 'l'   A is a lower triangular matrix.
 *
 *           Unchanged on exit.
 *
 *  TRANSA - CHARACTER*1.
 *           On entry, TRANSA specifies the form of op( A ) to be used in
 *           the matrix multiplication as follows:
 *
 *              TRANSA = 'N' or 'n'   op( A ) = A.
 *
 *              TRANSA = 'T' or 't'   op( A ) = A'.
 *
 *              TRANSA = 'C' or 'c'   op( A ) = A'.
 *
 *           Unchanged on exit.
 *
 *  DIAG   - CHARACTER*1.
 *           On entry, DIAG specifies whether or not A is unit triangular
 *           as follows:
 *
 *              DIAG = 'U' or 'u'   A is assumed to be unit triangular.
 *
 *              DIAG = 'N' or 'n'   A is not assumed to be unit
 *                                  triangular.
 *
 *           Unchanged on exit.
 *
 *  M      - INTEGER.
 *           On entry, M specifies the number of rows of B. M must be at
 *           least zero.
 *           Unchanged on exit.
 *
 *  N      - INTEGER.
 *           On entry, N specifies the number of columns of B.  N must be
 *           at least zero.
 *           Unchanged on exit.
 *
 *  ALPHA  - DOUBLE PRECISION.
 *           On entry,  ALPHA specifies the scalar  alpha. When  alpha is
 *           zero then  A is not referenced and  B need not be set before
 *           entry.
 *           Unchanged on exit.
 *
 *  A      - DOUBLE PRECISION array of DIMENSION ( LDA, k ), where k is m
 *           when  SIDE = 'L' or 'l'  and is  n  when  SIDE = 'R' or 'r'.
 *           Before entry  with  UPLO = 'U' or 'u',  the  leading  k by k
 *           upper triangular part of the array  A must contain the upper
 *           triangular matrix  and the strictly lower triangular part of
 *           A is not referenced.
 *           Before entry  with  UPLO = 'L' or 'l',  the  leading  k by k
 *           lower triangular part of the array  A must contain the lower
 *           triangular matrix  and the strictly upper triangular part of
 *           A is not referenced.
 *           Note that when  DIAG = 'U' or 'u',  the diagonal elements of
 *           A  are not referenced either,  but are assumed to be  unity.
 *           Unchanged on exit.
 *
 *  LDA    - INTEGER.
 *           On entry, LDA specifies the first dimension of A as declared
 *           in the calling (sub) program.  When  SIDE = 'L' or 'l'  then
 *           LDA  must be at least  max( 1, m ),  when  SIDE = 'R' or 'r'
 *           then LDA must be at least max( 1, n ).
 *           Unchanged on exit.
 *
 *  B      - DOUBLE PRECISION array of DIMENSION ( LDB, n ).
 *           Before entry,  the leading  m by n part of the array  B must
 *           contain the matrix  B,  and  on exit  is overwritten  by the
 *           transformed matrix.
 *
 *  LDB    - INTEGER.
 *           On entry, LDB specifies the first dimension of B as declared
 *           in  the  calling  (sub)  program.   LDB  must  be  at  least
 *           max( 1, m ).
 *           Unchanged on exit.
 *
 *
 *  Level 3 Blas routine.
 *
 *  -- Written on 8-February-1989.
 *     Jack Dongarra, Argonne National Laboratory.
 *     Iain Duff, AERE Harwell.
 *     Jeremy Du Croz, Numerical Algorithms Group Ltd.
 *     Sven Hammarling, Numerical Algorithms Group Ltd.
 *
 *
 *     .. External Functions ..

Dtrmm()

dtrmm(String, String, String, String, int, int, double, double[], int, int, double[], int, int)

 public Dtrmm()

 public static void dtrmm(String side,
                          String uplo,
                          String transa,
                          String diag,
                          int m,
                          int n,
                          double alpha,
                          double a[],
                          int _a_offset,
                          int lda,
                          double b[],
                          int _b_offset,
                          int ldb)

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