#
Fortran Wiki

matmul

## Description

Performs a matrix multiplication on numeric or logical arguments.

## Standard

Fortran 95 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.

Revised on March 16, 2018 14:43:13
by

Jason Blevins
(128.146.137.52)
(874 characters / 0.0 pages)