matrix_multiplication

 

#!/bin/bash
# matrix_multiplication

(( ${#} != 2 )) && exit 1

load::matrix()
{
    while read ary; do
          eval "${1}$((${2}++))=(${ary})"
    done < ${3}
}

multiple()
{
    b=map${i}[j]
    d=maq${j}[p]
    ((q+=${!b}*${!d}))
}

loop()
{
    for((${1}=0; ${1}<${2}; ++${1})); do
         (( ${#} == 6 )) && q=0
         eval eval \\\$\{{3..${#}}\}
         (( ${#} == 9 )) && echo
         (( ${#} == 6 )) && echo -n "${q} "
    done
}

load::matrix map m ${1}
load::matrix maq n ${2}
loop i m loop p ${#maq0[@]} loop j n multiple

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