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name : zmathfunc

 #autoload

zsh_math_func_min() {
  emulate -L zsh
  local result=$1
  shift
  local arg
  for arg ; do
    (( arg < result ))
    case $? in
      (0) (( result = arg ));;
      (1) ;;
      (*) return $?;;
    esac
  done
  (( result ))
  true # Careful here: `return 0` evaluates an arithmetic expression
}
functions -M min 1 -1 zsh_math_func_min # at least one argument

zsh_math_func_max() {
  emulate -L zsh
  local result=$1
  shift
  local arg
  for arg ; do
    (( arg > result ))
    case $? in
      (0) (( result = arg ));;
      (1) ;;
      (*) return $?;;
    esac
  done
  (( result ))
  true # Careful here: `return 0` evaluates an arithmetic expression
}
functions -M max 1 -1 zsh_math_func_max # at least one argument

zsh_math_func_sum() {
  emulate -L zsh
  local sum
  local arg
  for arg ; do
    (( sum += arg ))
  done
  (( sum ))
  true # Careful here: `return 0` evaluates an arithmetic expression
}
functions -M sum 0 -1 zsh_math_func_sum

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