#!/bin/bash
#  math - Bash Script Math Support

set -e


######
# Integer Math

# int_inc() - Increments the integer variables named by its arguments.
int_inc() {
	min_args 1 "$@"
	local _int
	for _int in "$@"; do
		local -n var=$_int
		var=$(($var + 1))
	done
}

# int_bind() - Binds named variable ($1), such that ``$2 <= $1 <= $3``.
#  $1 - Variable name
#  $2 - Minimum value
#  $3 - Maximum value
int_bind() {
	has_args 3 "$@"
	local -n var=$1
	local min=$2
	local max=$3
	[ $min -lt $var ] || var=$min
	[ $max -gt $var ] || var=$max
}