9.188 MATMUL — matrix multiplication

Description:

Performs a matrix multiplication on numeric or logical arguments.

Standard:

Fortran 90 and later

Class:

Transformational function

Syntax:

RESULT = MATMUL(MATRIX_A, MATRIX_B)

Arguments:

MATRIX_A	An array of INTEGER, REAL, COMPLEX, or LOGICAL type, with a rank of one or two.
MATRIX_B	An array of INTEGER, REAL, or COMPLEX type if MATRIX_A is of a numeric type; otherwise, an array of LOGICAL type. The rank shall be one or two, and the first (or only) dimension of MATRIX_B shall be equal to the last (or only) dimension of MATRIX_A. MATRIX_A and MATRIX_B shall not both be rank one arrays.

Return value:

The matrix product of MATRIX_A and MATRIX_B. The type and kind of the result follow the usual type and kind promotion rules, as for the * or .AND. operators.